Prevalence: The total number of cases of a given disease in a specified population at a designated time. It is differentiated from INCIDENCE, which refers to the number of new cases in the population at a given time.Cross-Sectional Studies: Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time.Risk Factors: An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.Age Distribution: The frequency of different ages or age groups in a given population. The distribution may refer to either how many or what proportion of the group. The population is usually patients with a specific disease but the concept is not restricted to humans and is not restricted to medicine.Age Factors: Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time.Sex Distribution: The number of males and females in a given population. The distribution may refer to how many men or women or what proportion of either in the group. The population is usually patients with a specific disease but the concept is not restricted to humans and is not restricted to medicine.BrazilSex Factors: Maleness or femaleness as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or effect of a circumstance. It is used with human or animal concepts but should be differentiated from SEX CHARACTERISTICS, anatomical or physiological manifestations of sex, and from SEX DISTRIBUTION, the number of males and females in given circumstances.Health Surveys: A systematic collection of factual data pertaining to health and disease in a human population within a given geographic area.Questionnaires: Predetermined sets of questions used to collect data - clinical data, social status, occupational group, etc. The term is often applied to a self-completed survey instrument.United StatesRural Population: The inhabitants of rural areas or of small towns classified as rural.Urban Population: The inhabitants of a city or town, including metropolitan areas and suburban areas.Socioeconomic Factors: Social and economic factors that characterize the individual or group within the social structure.IndiaLogistic Models: Statistical models which describe the relationship between a qualitative dependent variable (that is, one which can take only certain discrete values, such as the presence or absence of a disease) and an independent variable. A common application is in epidemiology for estimating an individual's risk (probability of a disease) as a function of a given risk factor.China: A country spanning from central Asia to the Pacific Ocean.Smoking: Inhaling and exhaling the smoke of burning TOBACCO.Incidence: The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases, new or old, in the population at a given time.HIV Infections: Includes the spectrum of human immunodeficiency virus infections that range from asymptomatic seropositivity, thru AIDS-related complex (ARC), to acquired immunodeficiency syndrome (AIDS).Cohort Studies: Studies in which subsets of a defined population are identified. These groups may or may not be exposed to factors hypothesized to influence the probability of the occurrence of a particular disease or other outcome. Cohorts are defined populations which, as a whole, are followed in an attempt to determine distinguishing subgroup characteristics.Retrospective Studies: Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.Population Surveillance: Ongoing scrutiny of a population (general population, study population, target population, etc.), generally using methods distinguished by their practicability, uniformity, and frequently their rapidity, rather than by complete accuracy.Comorbidity: The presence of co-existing or additional diseases with reference to an initial diagnosis or with reference to the index condition that is the subject of study. Comorbidity may affect the ability of affected individuals to function and also their survival; it may be used as a prognostic indicator for length of hospital stay, cost factors, and outcome or survival.Infant, Newborn: An infant during the first month after birth.Obesity: A status with BODY WEIGHT that is grossly above the acceptable or desirable weight, usually due to accumulation of excess FATS in the body. The standards may vary with age, sex, genetic or cultural background. In the BODY MASS INDEX, a BMI greater than 30.0 kg/m2 is considered obese, and a BMI greater than 40.0 kg/m2 is considered morbidly obese (MORBID OBESITY).Odds Ratio: The ratio of two odds. The exposure-odds ratio for case control data is the ratio of the odds in favor of exposure among cases to the odds in favor of exposure among noncases. The disease-odds ratio for a cohort or cross section is the ratio of the odds in favor of disease among the exposed to the odds in favor of disease among the unexposed. The prevalence-odds ratio refers to an odds ratio derived cross-sectionally from studies of prevalent cases.Epidemiologic Methods: Research techniques that focus on study designs and data gathering methods in human and animal populations.Prospective Studies: Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.Rural Health: The status of health in rural populations.Mass Screening: Organized periodic procedures performed on large groups of people for the purpose of detecting disease.Body Mass Index: An indicator of body density as determined by the relationship of BODY WEIGHT to BODY HEIGHT. BMI=weight (kg)/height squared (m2). BMI correlates with body fat (ADIPOSE TISSUE). Their relationship varies with age and gender. For adults, BMI falls into these categories: below 18.5 (underweight); 18.5-24.9 (normal); 25.0-29.9 (overweight); 30.0 and above (obese). (National Center for Health Statistics, Centers for Disease Control and Prevention)Polymerase Chain Reaction: In vitro method for producing large amounts of specific DNA or RNA fragments of defined length and sequence from small amounts of short oligonucleotide flanking sequences (primers). The essential steps include thermal denaturation of the double-stranded target molecules, annealing of the primers to their complementary sequences, and extension of the annealed primers by enzymatic synthesis with DNA polymerase. The reaction is efficient, specific, and extremely sensitive. Uses for the reaction include disease diagnosis, detection of difficult-to-isolate pathogens, mutation analysis, genetic testing, DNA sequencing, and analyzing evolutionary relationships.Feces: Excrement from the INTESTINES, containing unabsorbed solids, waste products, secretions, and BACTERIA of the DIGESTIVE SYSTEM.IranDiabetes Mellitus: A heterogeneous group of disorders characterized by HYPERGLYCEMIA and GLUCOSE INTOLERANCE.Spain: Parliamentary democracy located between France on the northeast and Portugual on the west and bordered by the Atlantic Ocean and the Mediterranean Sea.JapanChi-Square Distribution: A distribution in which a variable is distributed like the sum of the squares of any given independent random variable, each of which has a normal distribution with mean of zero and variance of one. The chi-square test is a statistical test based on comparison of a test statistic to a chi-square distribution. The oldest of these tests are used to detect whether two or more population distributions differ from one another.Pregnancy: The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.Urban Health: The status of health in urban populations.Genotype: The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS.Severity of Illness Index: Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.TurkeyChronic Disease: Diseases which have one or more of the following characteristics: they are permanent, leave residual disability, are caused by nonreversible pathological alteration, require special training of the patient for rehabilitation, or may be expected to require a long period of supervision, observation, or care. (Dictionary of Health Services Management, 2d ed)Hypertension: Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more.Case-Control Studies: Studies which start with the identification of persons with a disease of interest and a control (comparison, referent) group without the disease. The relationship of an attribute to the disease is examined by comparing diseased and non-diseased persons with regard to the frequency or levels of the attribute in each group.Intestinal Diseases, Parasitic: Infections of the INTESTINES with PARASITES, commonly involving PARASITIC WORMS. Infections with roundworms (NEMATODE INFECTIONS) and tapeworms (CESTODE INFECTIONS) are also known as HELMINTHIASIS.ItalyTime Factors: Elements of limited time intervals, contributing to particular results or situations.MexicoEuropean Continental Ancestry Group: Individuals whose ancestral origins are in the continent of Europe.Asthma: A form of bronchial disorder with three distinct components: airway hyper-responsiveness (RESPIRATORY HYPERSENSITIVITY), airway INFLAMMATION, and intermittent AIRWAY OBSTRUCTION. It is characterized by spasmodic contraction of airway smooth muscle, WHEEZING, and dyspnea (DYSPNEA, PAROXYSMAL).Malaysia: A parliamentary democracy with a constitutional monarch in southeast Asia, consisting of 11 states (West Malaysia) on the Malay Peninsula and two states (East Malaysia) on the island of BORNEO. It is also called the Federation of Malaysia. Its capital is Kuala Lumpur. Before 1963 it was the Union of Malaya. It reorganized in 1948 as the Federation of Malaya, becoming independent from British Malaya in 1957 and becoming Malaysia in 1963 as a federation of Malaya, Sabah, Sarawak, and Singapore (which seceded in 1965). The form Malay- probably derives from the Tamil malay, mountain, with reference to its geography. (From Webster's New Geographical Dictionary, 1988, p715 & Room, Brewer's Dictionary of Names, 1992, p329)Multivariate Analysis: A set of techniques used when variation in several variables has to be studied simultaneously. In statistics, multivariate analysis is interpreted as any analytic method that allows simultaneous study of two or more dependent variables.Risk Assessment: The qualitative or quantitative estimation of the likelihood of adverse effects that may result from exposure to specified health hazards or from the absence of beneficial influences. (Last, Dictionary of Epidemiology, 1988)Nigeria: A republic in western Africa, south of NIGER between BENIN and CAMEROON. Its capital is Abuja.Ethnic Groups: A group of people with a common cultural heritage that sets them apart from others in a variety of social relationships.South Africa: A republic in southern Africa, the southernmost part of Africa. It has three capitals: Pretoria (administrative), Cape Town (legislative), and Bloemfontein (judicial). Officially the Republic of South Africa since 1960, it was called the Union of South Africa 1910-1960.Educational Status: Educational attainment or level of education of individuals.Endemic Diseases: The constant presence of diseases or infectious agents within a given geographic area or population group. It may also refer to the usual prevalence of a given disease with such area or group. It includes holoendemic and hyperendemic diseases. A holoendemic disease is one for which a high prevalent level of infection begins early in life and affects most of the child population, leading to a state of equilibrium such that the adult population shows evidence of the disease much less commonly than do children (malaria in many communities is a holoendemic disease). A hyperendemic disease is one that is constantly present at a high incidence and/or prevalence rate and affects all groups equally. (Last, A Dictionary of Epidemiology, 3d ed, p53, 78, 80)Overweight: A status with BODY WEIGHT that is above certain standard of acceptable or desirable weight. In the scale of BODY MASS INDEX, overweight is defined as having a BMI of 25.0-29.9 kg/m2. Overweight may or may not be due to increases in body fat (ADIPOSE TISSUE), hence overweight does not equal "over fat".Metabolic Syndrome X: A cluster of metabolic risk factors for CARDIOVASCULAR DISEASES and TYPE 2 DIABETES MELLITUS. The major components of metabolic syndrome X include excess ABDOMINAL FAT; atherogenic DYSLIPIDEMIA; HYPERTENSION; HYPERGLYCEMIA; INSULIN RESISTANCE; a proinflammatory state; and a prothrombotic (THROMBOSIS) state. (from AHA/NHLBI/ADA Conference Proceedings, Circulation 2004; 109:551-556)Seasons: Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Demography: Statistical interpretation and description of a population with reference to distribution, composition, or structure.Sensitivity and Specificity: Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)Korea: Former kingdom, located on Korea Peninsula between Sea of Japan and Yellow Sea on east coast of Asia. In 1948, the kingdom ceased and two independent countries were formed, divided by the 38th parallel.Nutrition Surveys: A systematic collection of factual data pertaining to the nutritional status of a human population within a given geographic area. Data from these surveys are used in preparing NUTRITION ASSESSMENTS.Follow-Up Studies: Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.Hepatitis C: INFLAMMATION of the LIVER in humans caused by HEPATITIS C VIRUS, a single-stranded RNA virus. Its incubation period is 30-90 days. Hepatitis C is transmitted primarily by contaminated blood parenterally, and is often associated with transfusion and intravenous drug abuse. However, in a significant number of cases, the source of hepatitis C infection is unknown.Regression Analysis: Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.Sexual Behavior: Sexual activities of humans.Occupational Diseases: Diseases caused by factors involved in one's employment.EnglandGreat BritainFrance: A country in western Europe bordered by the Atlantic Ocean, the English Channel, the Mediterranean Sea, and the countries of Belgium, Germany, Italy, Spain, Switzerland, the principalities of Andorra and Monaco, and by the duchy of Luxembourg. Its capital is Paris.African Continental Ancestry Group: Individuals whose ancestral origins are in the continent of Africa.PortugalMental Disorders: Psychiatric illness or diseases manifested by breakdowns in the adaptational process expressed primarily as abnormalities of thought, feeling, and behavior producing either distress or impairment of function.Students: Individuals enrolled in a school or formal educational program.Social Class: A stratum of people with similar position and prestige; includes social stratification. Social class is measured by criteria such as education, occupation, and income.Sampling Studies: Studies in which a number of subjects are selected from all subjects in a defined population. Conclusions based on sample results may be attributed only to the population sampled.Data Collection: Systematic gathering of data for a particular purpose from various sources, including questionnaires, interviews, observation, existing records, and electronic devices. The process is usually preliminary to statistical analysis of the data.GermanyConfidence Intervals: A range of values for a variable of interest, e.g., a rate, constructed so that this range has a specified probability of including the true value of the variable.Geography: The science dealing with the earth and its life, especially the description of land, sea, and air and the distribution of plant and animal life, including humanity and human industries with reference to the mutual relations of these elements. (From Webster, 3d ed)Carrier State: The condition of harboring an infective organism without manifesting symptoms of infection. The organism must be readily transmissible to another susceptible host.Longitudinal Studies: Studies in which variables relating to an individual or group of individuals are assessed over a period of time.Republic of Korea: The capital is Seoul. The country, established September 9, 1948, is located on the southern part of the Korean Peninsula. Its northern border is shared with the Democratic People's Republic of Korea.EuropeRespiratory Sounds: Noises, normal and abnormal, heard on auscultation over any part of the RESPIRATORY TRACT.Hepatitis B: INFLAMMATION of the LIVER in humans caused by a member of the ORTHOHEPADNAVIRUS genus, HEPATITIS B VIRUS. It is primarily transmitted by parenteral exposure, such as transfusion of contaminated blood or blood products, but can also be transmitted via sexual or intimate personal contact.Thailand: Formerly known as Siam, this is a Southeast Asian nation at the center of the Indochina peninsula. Bangkok is the capital city.Anti-Bacterial Agents: Substances that reduce the growth or reproduction of BACTERIA.TaiwanSexually Transmitted Diseases: Diseases due to or propagated by sexual contact.VietnamPapillomavirus Infections: Neoplasms of the skin and mucous membranes caused by papillomaviruses. They are usually benign but some have a high risk for malignant progression.Blood DonorsNetherlands: Country located in EUROPE. It is bordered by the NORTH SEA, BELGIUM, and GERMANY. Constituent areas are Aruba, Curacao, Sint Maarten, formerly included in the NETHERLANDS ANTILLES.Diabetes Mellitus, Type 2: A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY.Canada: The largest country in North America, comprising 10 provinces and three territories. Its capital is Ottawa.Residence Characteristics: Elements of residence that characterize a population. They are applicable in determining need for and utilization of health services.Hispanic Americans: Persons living in the United States of Mexican (MEXICAN AMERICANS), Puerto Rican, Cuban, Central or South American, or other Spanish culture or origin. The concept does not include Brazilian Americans or Portuguese Americans.Ethiopia: An independent state in eastern Africa. Ethiopia is located in the Horn of Africa and is bordered on the north and northeast by Eritrea, on the east by Djibouti and Somalia, on the south by Kenya, and on the west and southwest by Sudan. Its capital is Addis Ababa.Disease Reservoirs: Animate or inanimate sources which normally harbor disease-causing organisms and thus serve as potential sources of disease outbreaks. Reservoirs are distinguished from vectors (DISEASE VECTORS) and carriers, which are agents of disease transmission rather than continuing sources of potential disease outbreaks.Abattoirs: Places where animals are slaughtered and dressed for market.Tanzania: A republic in eastern Africa, south of UGANDA and north of MOZAMBIQUE. Its capital is Dar es Salaam. It was formed in 1964 by a merger of the countries of TANGANYIKA and ZANZIBAR.HIV Seroprevalence: Studies of the number of cases where human immunodeficiency virus (HIV) is present in a specific population at a designated time. The presence in a given individual is determined by the finding of HIV antibodies in the serum (HIV SEROPOSITIVITY).Helminthiasis: Infestation with parasitic worms of the helminth class.Substance Abuse, Intravenous: Abuse, overuse, or misuse of a substance by its injection into a vein.Chlamydia Infections: Infections with bacteria of the genus CHLAMYDIA.Enzyme-Linked Immunosorbent Assay: An immunoassay utilizing an antibody labeled with an enzyme marker such as horseradish peroxidase. While either the enzyme or the antibody is bound to an immunosorbent substrate, they both retain their biologic activity; the change in enzyme activity as a result of the enzyme-antibody-antigen reaction is proportional to the concentration of the antigen and can be measured spectrophotometrically or with the naked eye. Many variations of the method have been developed.Pregnancy Complications, Infectious: The co-occurrence of pregnancy and an INFECTION. The infection may precede or follow FERTILIZATION.Cattle Diseases: Diseases of domestic cattle of the genus Bos. It includes diseases of cows, yaks, and zebus.Indians, North American: Individual members of North American ethnic groups with ancient historic ancestral origins in Asia.GreeceCardiovascular Diseases: Pathological conditions involving the CARDIOVASCULAR SYSTEM including the HEART; the BLOOD VESSELS; or the PERICARDIUM.Asian Continental Ancestry Group: Individuals whose ancestral origins are in the southeastern and eastern areas of the Asian continent.Cluster Analysis: A set of statistical methods used to group variables or observations into strongly inter-related subgroups. In epidemiology, it may be used to analyze a closely grouped series of events or cases of disease or other health-related phenomenon with well-defined distribution patterns in relation to time or place or both.Schools: Educational institutions.Uganda: A republic in eastern Africa, south of SUDAN and west of KENYA. Its capital is Kampala.Cameroon: A republic in central Africa lying east of CHAD and the CENTRAL AFRICAN REPUBLIC and west of NIGERIA. The capital is Yaounde.Epidemiologic Studies: Studies designed to examine associations, commonly, hypothesized causal relations. They are usually concerned with identifying or measuring the effects of risk factors or exposures. The common types of analytic study are CASE-CONTROL STUDIES; COHORT STUDIES; and CROSS-SECTIONAL STUDIES.African Americans: Persons living in the United States having origins in any of the black groups of Africa.PakistanAustralia: The smallest continent and an independent country, comprising six states and two territories. Its capital is Canberra.Eczema: A pruritic papulovesicular dermatitis occurring as a reaction to many endogenous and exogenous agents (Dorland, 27th ed).IsraelSubstance-Related Disorders: Disorders related to substance abuse.Asia: The largest of the continents. It was known to the Romans more specifically as what we know today as Asia Minor. The name comes from at least two possible sources: from the Assyrian asu (to rise) or from the Sanskrit usa (dawn), both with reference to its being the land of the rising sun, i.e., eastern as opposed to Europe, to the west. (From Webster's New Geographical Dictionary, 1988, p82 & Room, Brewer's Dictionary of Names, 1992, p34)Nutritional Status: State of the body in relation to the consumption and utilization of nutrients.Risk-Taking: Undertaking a task involving a challenge for achievement or a desirable goal in which there is a lack of certainty or a fear of failure. It may also include the exhibiting of certain behaviors whose outcomes may present a risk to the individual or to those associated with him or her.Saudi ArabiaLife Style: Typical way of life or manner of living characteristic of an individual or group. (From APA, Thesaurus of Psychological Index Terms, 8th ed)SwitzerlandSwedenSyphilis: A contagious venereal disease caused by the spirochete TREPONEMA PALLIDUM.Developing Countries: Countries in the process of change with economic growth, that is, an increase in production, per capita consumption, and income. The process of economic growth involves better utilization of natural and human resources, which results in a change in the social, political, and economic structures.Predictive Value of Tests: In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test.Kenya: A republic in eastern Africa, south of ETHIOPIA, west of SOMALIA with TANZANIA to its south, and coastline on the Indian Ocean. Its capital is Nairobi.PolandIndonesia: A republic stretching from the Indian Ocean east to New Guinea, comprising six main islands: Java, Sumatra, Bali, Kalimantan (the Indonesian portion of the island of Borneo), Sulawesi (formerly known as the Celebes) and Irian Jaya (the western part of New Guinea). Its capital is Djakarta. The ethnic groups living there are largely Chinese, Arab, Eurasian, Indian, and Pakistani; 85% of the peoples are of the Islamic faith.World Health: The concept pertaining to the health status of inhabitants of the world.Anthropometry: The technique that deals with the measurement of the size, weight, and proportions of the human or other primate body.CaliforniaBlindness: The inability to see or the loss or absence of perception of visual stimuli. This condition may be the result of EYE DISEASES; OPTIC NERVE DISEASES; OPTIC CHIASM diseases; or BRAIN DISEASES affecting the VISUAL PATHWAYS or OCCIPITAL LOBE.Animals, Wild: Animals considered to be wild or feral or not adapted for domestic use. It does not include wild animals in zoos for which ANIMALS, ZOO is available.Hepatitis C Antibodies: Antibodies to the HEPATITIS C ANTIGENS including antibodies to envelope, core, and non-structural proteins.Coinfection: Simultaneous infection of a host organism by two or more pathogens. In virology, coinfection commonly refers to simultaneous infection of a single cell by two or more different viruses.Egypt: A country in northern Africa, bordering the Mediterranean Sea, between Libya and the Gaza Strip, and the Red Sea north of Sudan, and includes the Asian Sinai Peninsula Its capital is Cairo.Alcohol Drinking: Behaviors associated with the ingesting of alcoholic beverages, including social drinking.Dental Caries: Localized destruction of the tooth surface initiated by decalcification of the enamel followed by enzymatic lysis of organic structures and leading to cavity formation. If left unchecked, the cavity may penetrate the enamel and dentin and reach the pulp.ScotlandDrug Resistance, Bacterial: The ability of bacteria to resist or to become tolerant to chemotherapeutic agents, antimicrobial agents, or antibiotics. This resistance may be acquired through gene mutation or foreign DNA in transmissible plasmids (R FACTORS).Diabetes Complications: Conditions or pathological processes associated with the disease of diabetes mellitus. Due to the impaired control of BLOOD GLUCOSE level in diabetic patients, pathological processes develop in numerous tissues and organs including the EYE, the KIDNEY, the BLOOD VESSELS, and the NERVE TISSUE.NorwayOccupations: Crafts, trades, professions, or other means of earning a living.Continental Population Groups: Groups of individuals whose putative ancestry is from native continental populations based on similarities in physical appearance.Homosexuality, Male: Sexual attraction or relationship between males.Antibodies, Viral: Immunoglobulins produced in response to VIRAL ANTIGENS.Microbial Sensitivity Tests: Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses).Parasite Egg Count: Determination of parasite eggs in feces.AfricaDepression: Depressive states usually of moderate intensity in contrast with major depression present in neurotic and psychotic disorders.Behavioral Risk Factor Surveillance System: Telephone surveys are conducted to monitor prevalence of the major behavioral risks among adults associated with premature MORBIDITY and MORTALITY. The data collected is in regard to actual behaviors, rather than on attitudes or knowledge. The Centers for Disease Control and Prevention (CDC) established the Behavioral Risk Factor Surveillance System (BRFSS) in 1984.Sexual Partners: Married or single individuals who share sexual relations.Occupational Exposure: The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.Helminths: Commonly known as parasitic worms, this group includes the ACANTHOCEPHALA; NEMATODA; and PLATYHELMINTHS. Some authors consider certain species of LEECHES that can become temporarily parasitic as helminths.Age of Onset: The age, developmental stage, or period of life at which a disease or the initial symptoms or manifestations of a disease appear in an individual.Prostitution: The practice of indulging in sexual relations for money.Health Status: The level of health of the individual, group, or population as subjectively assessed by the individual or by more objective measures.Anemia: A reduction in the number of circulating ERYTHROCYTES or in the quantity of HEMOGLOBIN.Malnutrition: An imbalanced nutritional status resulted from insufficient intake of nutrients to meet normal physiological requirement.Hepatitis B Surface Antigens: Those hepatitis B antigens found on the surface of the Dane particle and on the 20 nm spherical and tubular particles. Several subspecificities of the surface antigen are known. These were formerly called the Australia antigen.Registries: The systems and processes involved in the establishment, support, management, and operation of registers, e.g., disease registers.Chlamydia trachomatis: Type species of CHLAMYDIA causing a variety of ocular and urogenital diseases.Treatment Outcome: Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.Health Behavior: Behaviors expressed by individuals to protect, maintain or promote their health status. For example, proper diet, and appropriate exercise are activities perceived to influence health status. Life style is closely associated with health behavior and factors influencing life style are socioeconomic, educational, and cultural.PrisonersPapillomaviridae: A family of small, non-enveloped DNA viruses infecting birds and most mammals, especially humans. They are grouped into multiple genera, but the viruses are highly host-species specific and tissue-restricted. They are commonly divided into hundreds of papillomavirus "types", each with specific gene function and gene control regions, despite sequence homology. Human papillomaviruses are found in the genera ALPHAPAPILLOMAVIRUS; BETAPAPILLOMAVIRUS; GAMMAPAPILLOMAVIRUS; and MUPAPILLOMAVIRUS.HIV Seropositivity: Development of neutralizing antibodies in individuals who have been exposed to the human immunodeficiency virus (HIV/HTLV-III/LAV).Sequence Analysis, DNA: A multistage process that includes cloning, physical mapping, subcloning, determination of the DNA SEQUENCE, and information analysis.ArgentinaPeruSmoking Cessation: Discontinuation of the habit of smoking, the inhaling and exhaling of tobacco smoke.FinlandHelicobacter Infections: Infections with organisms of the genus HELICOBACTER, particularly, in humans, HELICOBACTER PYLORI. The clinical manifestations are focused in the stomach, usually the gastric mucosa and antrum, and the upper duodenum. This infection plays a major role in the pathogenesis of type B gastritis and peptic ulcer disease.Ghana: A republic in western Africa, south of BURKINA FASO and west of TOGO. Its capital is Accra.Anemia, Iron-Deficiency: Anemia characterized by decreased or absent iron stores, low serum iron concentration, low transferrin saturation, and low hemoglobin concentration or hematocrit value. The erythrocytes are hypochromic and microcytic and the iron binding capacity is increased.Interviews as Topic: Conversations with an individual or individuals held in order to obtain information about their background and other personal biographical data, their attitudes and opinions, etc. It includes school admission or job interviews.Military Personnel: Persons including soldiers involved with the armed forces.BangladeshSingaporeHelicobacter pylori: A spiral bacterium active as a human gastric pathogen. It is a gram-negative, urease-positive, curved or slightly spiral organism initially isolated in 1982 from patients with lesions of gastritis or peptic ulcers in Western Australia. Helicobacter pylori was originally classified in the genus CAMPYLOBACTER, but RNA sequencing, cellular fatty acid profiles, growth patterns, and other taxonomic characteristics indicate that the micro-organism should be included in the genus HELICOBACTER. It has been officially transferred to Helicobacter gen. nov. (see Int J Syst Bacteriol 1989 Oct;39(4):297-405).Poverty: A situation in which the level of living of an individual, family, or group is below the standard of the community. It is often related to a specific income level.Risk: The probability that an event will occur. It encompasses a variety of measures of the probability of a generally unfavorable outcome.Trachoma: A chronic infection of the CONJUNCTIVA and CORNEA caused by CHLAMYDIA TRACHOMATIS.Morbidity: The proportion of patients with a particular disease during a given year per given unit of population.Self Report: Method for obtaining information through verbal responses, written or oral, from subjects.Denmark
Report: Cancer deaths continue to drop | Deseret NewsBut some types continue to increase in prevalence. ... Reduced smoking prevalence sparked a decline of lung cancer- ... some types continue to increase in prevalence. Skin, esophageal, thyroid, liver, kidney, anus, pancreas and cancers related to ...
Tests using single markers : Antenatal and Neonatal Screening - oi... its prevalence, its natural history, and the efficacy of its treatment or prevention. Information on the overlap of test values ... its prevalence, its natural history, and the efficacy of its treatment or prevention. Information on the overlap of test values ... together with data on prevalence, permit the estimation of the risk of being affected. This information is also needed for... ... together with data on prevalence, permit the estimation of the risk of being affected. This information is also needed for ...
On the prevalence of trends in primary commodity pricesCitations for "On the prevalence of trends in primary commodity prices". by Kellard, Neil & Wohar, Mark E.. For a complete ...
Prevalence of Hardened PHP?... I am running PHP 5.2.0-8 on Debian Etch.. I notice that all PHP releases for Debian (i.e. the ones ...
Browsing by Author "Onwukwe, V"Prevalence of alcohol and cannabis use and reported knowledge, attitudes and practice regarding its relationship with health ...
Global Prevalence of Diabetes | Diabetes CareThe higher prevalence is more likely to be explained by a combination of the inclusion of surveys reporting higher prevalence ... 1, which shows sex-specific estimates of diabetes prevalence by age. Globally, diabetes prevalence is similar in men and women ... a single estimate of diabetes prevalence was used. In the current estimates, on the advice of local experts, the prevalence of ... RESULTS-The prevalence of diabetes for all age-groups worldwide was estimated to be 2.8% in 2000 and 4.4% in 2030. The total ...
The influence of age and sex on the prevalence of depressive conditions : report from the National Survey of Psychiatric...Women are consistently reported to have a greater prevalence of depressive disorders than men. The reason for this is unclear, ... The influence of age and sex on the prevalence of depressive conditions : report from the National Survey of Psychiatric ... This large and representative survey adds considerably to the increasingly held view that the sex difference in prevalence of ... There was a clear reversal of the sex difference in prevalence of depression in those over age 55. ...
Re-estimated provincial HIV antenatal survey prevalence for 2007 and a reinterpretation of the national trendThe national prevalence is estimated as the weighted average of the provincial prevalence rates, using the number of women in ... However, it is difficult to draw conclusions by simply monitoring overall prevalence. Prevalence falls when the number of ... appear that the prevalence among those below age 30 has peaked, while the prevalence among those over 30, which would include ... the prevalence to rise. A rise in prevalence in such a situation is also evidence of success. ...
prevalence | epidemiology | Britannica.com... point prevalence) or over a specified period of time (period... ... prevalence: In epidemiology, the proportion of a population ... point prevalence) or over a specified period of time (period prevalence). Prevalence is often confused with incidence, which is ... incidence: Incidence versus prevalence. Incidence contrasts with prevalence, which includes both new and existing cases. For ... Prevalence, in epidemiology, the proportion of a population with a disease or a particular condition at a specific point in ...
Thalassemia Genetic PrevalenceThe genetic prevalence of this condition varies greatly according to the region of the world and the specific ancestry of an ... The genetic prevalence of this condition varies greatly according to the region of the world and the specific ancestry of an ... The region of the world and ethnicity of the individual is an important factor in the prevalence of the gene mutations. The ... There are two broad types of thalassemia, alpha-thalassemia and beta-thalassemia, each of which has a different prevalence ...
News - Prevalence - Mod DBLord Iheanacho's Prevalence is a jungle horror-themed, first person shooter game utilizing the Unreal Engine 3. The game serves ...
Prevalence of Occupational : 9780717619009Prevalence of Occupational, 9780717619009, available at Book Depository with free delivery worldwide. ...
Prevalence of Fibromyalgia... looked at the prevalence of fibromyalgia in the general population of Olmsted County, Minnesota. ... Prevalence of fibromyalgia: a population-based study in Olmsted County, Minnesota, utilizing the Rochester Epidemiology Project ... OBJECTIVE: To estimate and compare the prevalence of fibromyalgia by 2 different methods in Olmsted County, Minnesota.. METHODS ... The age- and sex-adjusted prevalence of fibromyalgia in the general population of Olmsted County by this method was estimated ...
Genetic Disease: PrevalenceHigh mutation rate of a specific gene may be responsible for the high prevalence of the corresponding disease. ... Various processes influence the prevalence of genetic diseases in the population, in particular the mutation rate, selection ... Zlotogora, Joël(Sep 2017) Genetic Disease: Prevalence. In: eLS. John Wiley & Sons Ltd, Chichester. http://www.els.net [doi: ...
Childhood Apraxia of Speech: Incidence and PrevalenceIncidence and Prevalence. Incidence of CAS refers to the number of new cases identified in a specified time period. Prevalence ... Efforts to determine epidemiologically sound estimates of the incidence and prevalence of CAS have been hindered by a number of ... Higher prevalence rates have also been reported with certain medical conditions, such as galactosemia and fragile X syndrome ( ...
ISDH: Women Count State Prevalence Rankings (Female)State Prevalence Rankings (Female). BRFSS, 2000. Overweight. Based on. BMI. Current. Smokers. No Regular. & Vigorous. Physical ... Current: Women Count State Prevalence Rankings (Female). ...
Egypt Contraceptive prevalence rate - DemographicsFacts and statistics about the Contraceptive prevalence rate of Egypt. Updated as of 2017. ...
Products - Health E Stats - Asthma Prevalence - 2003-2005Asthma Prevalence, Health Care Use and Mortality: United States, 2003-05 ... Asthma Prevalence, 2005. Three different asthma prevalence estimates are available from the National Health Interview Survey. ... Prevalence: National Health Interview Survey *See also:. Summary Health Statistics for U.S. Children [PDF - 1 MB]. Summary ... Asthma attack prevalence. In 2005, an estimated 4.2% of people (12.2 million) had at least one asthma attack in the previous ...
HPV prevalence higher than thought - Houston Chronicle... provides the most comprehensive assessment of human papillomavirus prevalence among American women. According to the study, ... provides the most comprehensive assessment of human papillomavirus prevalence among American women. The overall prevalence was ... HPV prevalence higher than thought. Study: More than 1 in 4 women has HPV. ERIC BERGER, Copyright 2007 Houston Chronicle ... Stanberry said the significance of the new study for Texas is that the data on prevalence of HPV in the United States are ...
Eritrea Contraceptive Prevalence Rate GrowthDataset and chart visualization of Eritrea's Contraceptive prevalence rate growth ...
Security 'greatest focus' as mobile tech prevalence grows | ZDNetSecurity 'greatest focus' as mobile tech prevalence grows. Uptake in mobile-based transactions and interactions will spur more ... Asked if the increasing prevalence of mobile-based transactions could mean criminal activity will shift to mobile from ...
CDC - Asthma - BRFSS 2004 - Prevalence Tables and Maps - Table C1and Prevalence (Number) by State or Territory: BRFSS 2004. State. Sample. Size. Prevalence. (percent). Standard. Error. 95% CI* ... Adult Self-Reported Current Asthma Prevalence Rate (Percent). ... Prevalence. (number). 95% CI*. (number). U.S. Total**. 295,333 ...
United States Obesity - adult prevalence rate - Demographics... adult prevalence rate of United States. Updated as of 2017. ... Obesity - adult prevalence rate by year chart. *Obesity - adult ... Obesity - adult prevalence rate: 35% (2014). Definition: This entry gives the percent of a country's population considered to ...
QRISK: QRISK2 (the most recent version of QRISK) is a prediction algorithm for cardiovascular disease (CVD) that uses traditional risk factors (age, systolic blood pressure, smoking status and ratio of total serum cholesterol to high-density lipoprotein cholesterol) together with body mass index, ethnicity, measures of deprivation, family history, chronic kidney disease, rheumatoid arthritis, atrial fibrillation, diabetes mellitus, and antihypertensive treatment.Age adjustment: In epidemiology and demography, age adjustment, also called age standardization, is a technique used to allow populations to be compared when the age profiles of the populations are quite different.University of CampinasClosed-ended question: A closed-ended question is a question format that limits respondents with a list of answer choices from which they must choose to answer the question.Dillman D.List of Parliamentary constituencies in Kent: The ceremonial county of Kent,Tamil Nadu Dr. M.G.R. Medical UniversityLayout of the Port of Tianjin: The Port of Tianjin is divided into nine areas: the three core (“Tianjin Xingang”) areas of Beijiang, Nanjiang, and Dongjiang around the Xingang fairway; the Haihe area along the river; the Beitang port area around the Beitangkou estuary; the Dagukou port area in the estuary of the Haihe River; and three areas under construction (Hanggu, Gaoshaling, Nangang).Incidence (epidemiology): Incidence is a measure of the probability of occurrence of a given medical condition in a population within a specified period of time. Although sometimes loosely expressed simply as the number of new cases during some time period, it is better expressed as a proportion or a rate with a denominator.Management of HIV/AIDS: The management of HIV/AIDS normally includes the use of multiple antiretroviral drugs in an attempt to control HIV infection. There are several classes of antiretroviral agents that act on different stages of the HIV life-cycle.Proportional reporting ratio: The proportional reporting ratio (PRR) is a statistic that is used to summarize the extent to which a particular adverse event is reported for individuals taking a specific drug, compared to the frequency at which the same adverse event is reported for patients taking some other drug (or who are taking any drug in a specified class of drugs). The PRR will typically be calculated using a surveillance database in which reports of adverse events from a variety of drugs are recorded.Comorbidity: In medicine, comorbidity is the presence of one or more additional disorders (or diseases) co-occurring with a primary disease or disorder; or the effect of such additional disorders or diseases. The additional disorder may also be a behavioral or mental disorder.Classification of obesity: Obesity is a medical condition in which excess body fat has accumulated to the extent that it has an adverse effect on health.WHO 2000 p.Epidemiological method: The science of epidemiology has matured significantly from the times of Hippocrates and John Snow. The techniques for gathering and analyzing epidemiological data vary depending on the type of disease being monitored but each study will have overarching similarities.Cancer screeningThermal cyclerList of universities in Iran: This is a list of universities in Iran.Permanent neonatal diabetes mellitus: A newly identified and potentially treatable form of monogenic diabetes is the neonatal diabetes caused by activating mutations of the KCNJ11 gene, which codes for the Kir6.2 subunit of the beta cell KATP channel.List of lighthouses in Spain: This is a list of lighthouses in Spain.Niigata UniversityPrenatal nutrition: Nutrition and weight management before and during :pregnancy has a profound effect on the development of infants. This is a rather critical time for healthy fetal development as infants rely heavily on maternal stores and nutrient for optimal growth and health outcome later in life.Kocaeli University: The University of Kocaeli (KOU) is a state university in Kocaeli, Turkey. It was founded as the Academy of Engineering and Architecture of Kocaeli in 1976.Non-communicable disease: Non-communicable disease (NCD) is a medical condition or disease that is non-infectious or non-transmissible. NCDs can refer to chronic diseases which last for long periods of time and progress slowly.HypertensionNested case-control study: A nested case control (NCC) study is a variation of a case-control study in which only a subset of controls from the cohort are compared to the incident cases. In a case-cohort study, all incident cases in the cohort are compared to a random subset of participants who do not develop the disease of interest.Intestinal parasiteTriangle of death (Italy): The triangle of death (Italian: Triangolo della morte) is an area in the Italian province of Campania comprising the municipalities of Acerra, Nola and Marigliano. The region has recently experienced increasing deaths caused by cancer and other diseases that exceeds the Italian national average.Temporal analysis of products: Temporal Analysis of Products (TAP), (TAP-2), (TAP-3) is an experimental technique for studyingOld Portal de Mercaderes (Mexico City): Old Portal de Mercaderes in the historic center of Mexico City was and is the west side of the main plaza (otherwise known as the "Zócalo"). This side of the plaza has been occupied by commercial structures since the Spanish Conquest of Mexico in 1521.Swiss Institute of Allergy and Asthma Research: Swiss Institute of Allergy and Asthma Research (SIAF), founded in 1988, performs basic research in the field of allergy and asthma with the aim to improve the understanding and treatment of these conditions, which affect around 30-40% of the westernized population. The Institute has its roots in the Tuberculosis Research Institute of Davos, a medical society founded in 1905 to study the beneficial effects of high altitude treatment of tuberculosis.Yamtuan Besar: Yamtuan Besar, also known as Yang di-Pertuan Besar, is the royal title of the ruler of the Malaysian state of Negeri Sembilan. The ruler of Negeri Sembilan is selected by a council of ruling chiefs in the state, or the datuk-datuk undang.Global Risks Report: The Global Risks Report is an annual study published by the World Economic Forum ahead of the Forum’s Annual Meeting in Davos, Switzerland. Based on the work of the Global Risk Network, the report describes changes occurring in the global risks landscape from year to year and identifies the global risks that could play a critical role in the upcoming year.Nigerian Ports Authority: The Nigerian Ports Authority (NPA) is a federal government agency that governs and operates the ports of Nigeria. The major ports controlled by the NPA include: the Lagos Port Complex and Tin Can Island Port in Lagos; Calabar Port, Delta Port, Rivers Port at Port Harcourt, and Onne Port.HIV/AIDS in South African townships: South Africa’s HIV/AIDS epidemic, which is among the most severe in the world, is concentrated in its townships, where many black South Africans live due to the lingering effects of the Group Areas Act. A 2010 study revealed that HIV/AIDS infection in South Africa is distinctly divided along racial lines: 13.Theodor Bilharz Research Institute: The Theodor Bilharz Research Institute is located in Giza, Egypt.Overweight PoochNational Cholesterol Education Program: The National Cholesterol Education Program is a program managed by the National Heart, Lung and Blood Institute, a division of the National Institutes of Health. Its goal is to reduce increased cardiovascular disease rates due to hypercholesterolemia (elevated cholesterol levels) in the United States of America.Four Seasons Baltimore and Residences: Four Seasons Hotel Baltimore is currently a 22 story highrise hotel complex building which opened on November 14, 2011. The building's construction began back in 2007 and went through several changes.Assay sensitivity: Assay sensitivity is a property of a clinical trial defined as the ability of a trial to distinguish an effective treatment from a less effective or ineffective intervention. Without assay sensitivity, a trial is not internally valid and is not capable of comparing the efficacy of two interventions.Yi Byeong-cheon: Yi Byeong-cheon (Hangeul: 이병천, also spelled Lee Byeong-chun, born January 5, 1965) is the veterinary professor at Seoul National University responsible for the ₩300 million KRW "Toppy" dog cloning program. Yi is a former aide to Hwang Woo-suk, a pioneer in the field with the "Snuppy" clone, who fell from grace after his stem cell research turned out to have been fabricated.List of people with hepatitis C: The infectious disease hepatitis C is caused by the hepatitis C virus (HCV), which affects the liver and is transmitted by blood-to-blood contact, or by exposure to another person's infected blood. The infection is often asymptomatic, but chronic infection can cause inflammation of the liver (chronic hepatitis).Regression dilution: Regression dilution, also known as regression attenuation, is the biasing of the regression slope towards zero (or the underestimation of its absolute value), caused by errors in the independent variable.Red Moss, Greater Manchester: Red Moss is a wetland mossland in Greater Manchester, located south of Horwich and east of Blackrod. (Grid Reference ).National Cancer Research Institute: The National Cancer Research Institute (NCRI) is a UK-wide partnership between cancer research funders, which promotes collaboration in cancer research. Its member organizations work together to maximize the value and benefit of cancer research for the benefit of patients and the public.Budic II of Brittany: Budic II (; or ; ), formerly known as Budick, was a king of Cornouaille in Brittany in the late 5th and early 6th centuries. He was the father of Hoel Mawr and is probably to be identified with the Emyr Llydaw ("Emperor of Brittany") and King Nentres who appear in Arthurian legend.Ladies Open of Portugal: The Ladies Open of Portugal was a women's professional golf tournament on the Ladies European Tour that took place Portugal.Mental disorderCigarette smoking among college students: The rates of college students smoking in the United States have fluctuated for the past twenty years. Majority of lifelong smokers begin smoking habits before the age of 24, which makes the college years a crucial time in the study of cigarette consumption.Relative index of inequality: The relative index of inequality (RII) is a regression-based index which summarizes the magnitude of socio-economic status (SES) as a source of inequalities in health. RII is useful because it takes into account the size of the population and the relative disadvantage experienced by different groups.Baden, Lower Saxony: Baden is a town near Bremen, in Lower Saxony, Germany. It is known to Africanists and Phoneticians as the place where Diedrich Hermann Westermann was born and died.Health geography: Health geography is the application of geographical information, perspectives, and methods to the study of health, disease, and health care.Rainbow (South Korean band)GA²LENHepatitis B immune globulinWat Chiang ManBacitracinNational Taiwan University Hospital: The National Taiwan University Hospital (NTUH; ) started operations under Japanese rule in Daitōtei (today's Dadaocheng) on June 18, 1895, and moved to its present location in 1898. The Hospital was later annexed to the Medical School of Taihoku Imperial University and renamed Taihoku Imperial University Medical School Affiliated Hospital in 1937.Institut Pasteur in Ho Chi Minh City: The Institut Pasteur in Ho Chi Minh City is a Vietnamese national institute initially created by the French in 1891 under the name Pasteur Institute - Sai Gon, in 1975 renamed the Institute of Epidemiology, and in 1991 given the current name.World Blood Donor Day: Every year on 14 June, countries around the world celebrate World Blood Donor Day (WBDD). The event, established in 2004, serves to raise awareness of the need for safe blood and blood products, and to thank blood donors for their voluntary, life-saving gifts of blood.Netherlands national rollball team: Vishwaraj Jadeja
(1/39136) Helicobacter pylori infection, garlic intake and precancerous lesions in a Chinese population at low risk of gastric cancer.
BACKGROUND: Cangshan County of Shandong Province has one of the lowest rates of gastric cancer (GC) in China. While intestinal metaplasia (IM) and dysplasia (DYS) are less common in Cangshan than in areas of Shandong at high risk of GC, these precursor lesions nevertheless affect about 20% of adults age > or = 55. SUBJECTS AND SETTING: In order to evaluate determinants of IM and DYS in Cangshan County, a low risk area of GC a survey was conducted among 214 adults who participated in a gastroscopic screening survey in Cangshan County in 1994. METHOD: A dietary interview and measurement of serum Helicobacter pylori antibodies were performed. RESULTS: The prevalence of H. pylori was lowest (19%) among those with normal gastric mucosa, rising steadily to 35% for superficial gastritis (SG), 56% for chronic atrophic gastritis (CAG), 80% for IM, and 100% for DYS. The prevalence odds of precancerous lesions were compared with the odds of normal histology or SG. The odds ratio (OR) or CAG associated with H. pylori positivity was 4.2 (95% confidence interval [CI] : 1.7-10.0), while the OR of IM/DYS associated with H. pylori positivity was 31.5 (95% CI: 5.2-187). After adjusting for H. pylori infection, drinking alcohol was a risk factor for CAG (OR = 3.2, 95% CI: 1.1-9.2) and IM/DYS (OR = 7.8, 95% CI: 1.3-47.7). On the other hand, consumption of garlic showed non-significant protective effects and an inverse association with H. pylori infection. CONCLUSIONS: The findings of this study suggest that infection with H. pylori is a risk factor and garlic may be protective, in the development and progression of advanced precancerous gastric lesions in an area of China at relatively low risk of GC. (+info)
(2/39136) Precancerous lesions in two counties of China with contrasting gastric cancer risk.
BACKGROUND: Gastric cancer (GC) is one of the most common cancers worldwide and shows remarkable geographical variation even within countries such as China. Linqu County in Shandong Province of northeast China has a GC rate that is 15 times higher than that of Cangshan County in Shandong, even though these counties are within 200 miles of each other. METHOD: In order to evaluate the frequency of precancerous gastric lesions in Linqu and Cangshan Counties we examined 3400 adults in Linqu County and 224 adults in Cangshan County. An endoscopic examination with four biopsies was performed in each individual of the two populations. RESULTS: The prevalence of intestinal metaplasia (IM) and dysplasia (DYS) was 30% and 15.1%, respectively, in Linqu compared to 7.9% and 5.6% in Cangshan (P < 0.01). Within these histological categories, advanced grades were found more often in Linqu than in Cangshan. The prevalences of IM and DYS were more common at each biopsy site in Linqu, where the lesions also tended to affect multiple sites. CONCLUSIONS: The findings of this study support the concept that IM and DYS are closely correlated with risks of GC and represent late stages in the multistep process of gastric carcinogenesis. (+info)
(3/39136) Cardiovascular disease in insulin dependent diabetes mellitus: similar rates but different risk factors in the US compared with Europe.
BACKGROUND: Cardiovascular disease (CVD) in insulin dependent diabetes mellitus (IDDM) has been linked to renal disease. However, little is known concerning international variation in the correlations with hyperglycaemia and standard CVD risk factors. METHODS: A cross-sectional comparison was made of prevalence rates and risk factor associations in two large studies of IDDM subjects: the Pittsburgh Epidemiology of Diabetes Complications Study (EDC) and the EURODIAB IDDM Complications Study from 31 centres in Europe. Subgroups of each were chosen to be comparable by age and duration of diabetes. The EDC population comprises 286 men (mean duration 20.1 years) and 281 women (mean duration 19.9 years); EURODIAB 608 men (mean duration 18.1 years) and 607 women (mean duration 18.9 years). The mean age of both populations was 28 years. Cardiovascular disease was defined by a past medical history of myocardial infarction, angina, and/or the Minnesota ECG codes (1.1-1.3, 4.1-4.3, 5.1-5.3, 7.1). RESULTS: Overall prevalence of CVD was similar in the two populations (i.e. men 8.6% versus 8.0%, women 7.4% versus 8.5%, EURODIAB versus EDC respectively), although EDC women had a higher prevalence of angina (3.9% versus 0.5%, P < 0.001). Multivariate modelling suggests that glycaemic control (HbA1c) is not related to CVD in men. Age and high density lipoprotein cholesterol predict CVD in EURODIAB, while triglycerides and hypertension predict CVD in EDC. For women in both populations, age and hypertension (or renal disease) are independent predictors. HbA1c is also an independent predictor-inversely in EURODIAB women (P < 0.008) and positively in EDC women (P = 0.03). Renal disease was more strongly linked to CVD in EDC than in EURODIAB. CONCLUSIONS: Despite a similar prevalence of CVD, risk factor associations appear to differ in the two study populations. Glycaemic control (HbA1c) does not show a consistent or strong relationship to CVD. (+info)
(4/39136) Body mass decrease after initial gain following smoking cessation.
BACKGROUND: Although smoking cessation is strongly associated with subsequent weight gain, it is not clear whether the initial gain in weight after smoking cessation remains over time. METHOD: Cross-sectional analyses were made, using data from periodic health examinations for workers, on the relationship between body mass index (BMI) and the length of smoking cessation. In addition, linear regression coefficients of BMI on the length of cessation were estimated according to alcohol intake and sport activity, to examine the modifying effect of these factors on the weight of former smokers. RESULTS: Means of BMI were 23.1 kg/m2, 23.3 kg/m2, 23.6 kg/m2 for light/medium smokers, heavy smokers and never smokers, respectively. Among former smokers who had smoked > or = 25 cigarettes a day, odds ratio (OR) of BMI >25 kg/m2 were 1.88 (95% confidence interval [CI] : 1.05-3.35), 1.32 (95% CI : 0.74-2.34), 0.66 (95% CI: 0.33-1.31) for those with 2-4 years, 5-7 years, and 8-10 years of smoking cessation, respectively. The corresponding OR among those who previously consumed <25 cigarettes a day were 1.06 (95% CI: 0.58-1.94), 1.00 (95% CI: 0.58-1.71), and 1.49 (95% CI: 0.95-2.32). CONCLUSIONS: The results suggest that although heavy smokers may experience large weight gain and weigh more than never smokers in the few years after smoking cessation, they thereafter lose weight to the never smoker level, while light and moderate smokers gain weight up to the never smoker level without any excess after smoking cessation. (+info)
(5/39136) Health status of Persian Gulf War veterans: self-reported symptoms, environmental exposures and the effect of stress.
BACKGROUND: Most US troops returned home from the Persian Gulf War (PGW) by Spring 1991 and many began reporting increased health symptoms and medical problems soon after. This investigation examines the relationships between several Gulf-service environmental exposures and health symptom reporting, and the role of traumatic psychological stress on the exposure-health symptom relationships. METHODS: Stratified, random samples of two cohorts of PGW veterans, from the New England area (n = 220) and from the New Orleans area (n = 71), were selected from larger cohorts being followed longitudinally since arrival home from the Gulf. A group of PGW-era veterans deployed to Germany (n = 50) served as a comparison group. The study protocol included questionnaires, a neuropsychological test battery, an environmental interview, and psychological diagnostic interviews. This report focuses on self-reported health symptoms and exposures of participants who completed a 52-item health symptom checklist and a checklist of environmental exposures. RESULTS: The prevalence of reported symptoms was greater in both Persian Gulf-deployed cohorts compared to the Germany cohort. Analyses of the body-system symptom scores (BSS), weighted to account for sampling design, and adjusted by age, sex, and education, indicated that Persian Gulf-deployed veterans were more likely to report neurological, pulmonary, gastrointestinal, cardiac, dermatological, musculoskeletal, psychological and neuropsychological system symptoms than Germany veterans. Using a priori hypotheses about the toxicant effects of exposure to specific toxicants, the relationships between self-reported exposures and body-system symptom groupings were examined through multiple regression analyses, controlling for war-zone exposure and post-traumatic stress disorder (PTSD). Self-reported exposures to pesticides, debris from Scuds, chemical and biological warfare (CBW) agents, and smoke from tent heaters each were significantly related to increased reporting of specific predicted BSS groupings. CONCLUSIONS: Veterans deployed to the Persian Gulf have higher self-reported prevalence of health symptoms compared to PGW veterans who were deployed only as far as Germany. Several Gulf-service environmental exposures are associated with increased health symptom reporting involving predicted body-systems, after adjusting for war-zone stressor exposures and PTSD. (+info)
(6/39136) Obstetric and neonatal outcome following chronic hypertension in pregnancy among different ethnic groups.
We retrospectively studied pre-eclampsia rate and obstetric outcome in a cohort of 436 pregnancies amongst 318 women of different ethnic backgrounds attending an antenatal hypertension clinic from 1980-1997, identifying 152 women (213 pregnancies) with chronic essential hypertension. The ethnic breakdown was: White, 64 (30.0%) pregnancies in 48 (31.5%) women; Black/Afro-Caribbean, 79 (37.1%) pregnancies in 56 (36.8%) women; and Indo-Asians, 70 (32.3%) pregnancies in 48 (31.6%) women. The prevalences of pre-eclampsia in White, Black and Indo-Asian women were 17.2%, 12.7% and 18.6%, respectively (p = 0.58). Pregnancies of Indo-Asian women were of shorter gestation, and babies in this group also had lower birth weight and ponderal index compared to those of White and Black women (all p < 0.05). The proportions of overall perinatal mortality were 1.6% for Whites (1/64), 3.8% for Blacks (3/79) and 10.0% for Indo-Asians (7/70), suggesting increased risk in the Indo-Asian group. Indo-Asian women with chronic essential hypertension need careful antenatal care and observation during pregnancy. (+info)
(7/39136) Different factors influencing the expression of Raynaud's phenomenon in men and women.
OBJECTIVE: To determine whether the risk profile for Raynaud's phenomenon (RP) is different between men and women. METHODS: In this cross-sectional study of 800 women and 725 men participating in the Framingham Offspring Study, the association of age, marital status, smoking, alcohol use, diabetes, hypertension, and hypercholesterolemia with prevalent RP was examined in men and women separately, after adjusting for relevant confounders. RESULTS: The prevalence of RP was 9.6% (n = 77) in women and 5.8% (n = 42) in men. In women, marital status and alcohol use were each associated with prevalent RP (for marital status adjusted odds ratio [OR] 2.3, 95% confidence interval [95% CI] 1.4-3.9; for alcohol use OR 2.2, 95% CI 1.0-5.2), whereas these factors were not associated with RP in men (marital status OR 1.4, 95% CI 0.6-3.5; alcohol use OR 1.0, 95% CI 0.2-4.4). In men, older age (OR 2.3, 95% CI 1.0-5.2) and smoking (OR 2.6, 95% CI 1.1-6.3) were associated with prevalent RP; these factors were not associated with RP in women (older age OR 0.8, 95% CI 0.4-1.6; smoking OR 0.7, 95% CI 0.4-1.1). Diabetes, hypertension, and hypercholesterolemia were not associated with RP in either sex. CONCLUSION: The results indicate that risk factors for RP differ between men and women. Age and smoking were associated with RP in men only, while the associations of marital status and alcohol use with RP were observed in women only. These findings suggest that different mechanisms influence the expression of RP in men and women. (+info)
(8/39136) Premature morbidity from cardiovascular and cerebrovascular diseases in women with systemic lupus erythematosus.
OBJECTIVE: To determine rates of morbidity due to cardiovascular and cerebrovascular diseases among women with systemic lupus erythematosus (SLE). METHODS: I used the California Hospital Discharge Database, which contains information on all discharges from acute care hospitals in California, to identify women with SLE who had been hospitalized for treatment of either acute myocardial infarction (AMI), congestive heart failure (CHF), or cerebrovascular accident (CVA) from 1991 to 1994. I compared the proportions of hospitalizations for each cause among women with SLE with those in a group of women without SLE, for 3 age strata (18-44 years, 45-64 years, and > or =65 years). RESULTS: Compared with young women without SLE, young women with SLE were 2.27 times more likely to be hospitalized because of AMI (95% confidence interval [95% CI] 1.08-3.46), 3.80 times more likely to be hospitalized because of CHF (95% CI 2.41-5.19), and 2.05 times more likely to be hospitalized because of CVA (95% CI 1.17-2.93). Among middle-aged women with SLE, the frequencies of hospitalization for AMI and CVA did not differ from those of the comparison group, but the risk of hospitalization for CHF was higher (odds ratio [OR] 1.39, 95% CI 1.05-1.73). Among elderly women with SLE, the risk of hospitalization for AMI was significantly lower (OR 0.70, 95% CI 0.51-0.89), the risk of hospitalization for CHF was higher (OR 1.25, 95% CI 1.01-1.49), and the risk of hospitalization for CVA was not significantly different from those in the comparison group. CONCLUSION: Young women with SLE are at substantially increased risk of AMI, CHF, and CVA. The relative odds of these conditions decrease with age among women with SLE. (+info)
incidence and prevalence
- When the incidence of disease is stable over time, such as in the absence of epidemics or changes in treatment effectiveness, prevalence ( P ) is the product of the incidence ( I ) and the average duration ( D ) of the disease or condition, or P = I × D . More complex mathematical relationships exist between incidence and prevalence when those assumptions cannot be met. (britannica.com)
- Efforts to determine epidemiologically sound estimates of the incidence and prevalence of CAS have been hindered by a number of factors, including a lack of clear and consistent diagnostic guidelines (Shriberg, Aram, & Kwiatkowski, 1997) and adequately validated diagnostic tools (McCauley & Strand, 2008). (asha.org)
- RESEARCH DESIGN AND METHODS -Data on diabetes prevalence by age and sex from a limited number of countries were extrapolated to all 191 World Health Organization member states and applied to United Nations' population estimates for 2000 and 2030. (diabetesjournals.org)
- Estimates of current and future diabetes prevalence have been published previously ( 1 - 3 ). (diabetesjournals.org)
- This report provides estimates of the global prevalence of diabetes in the year 2000 (as used in the World Health Organization [WHO] Global Burden of Disease Study) and projections for 2030. (diabetesjournals.org)
- It provides a sequel to the report describing estimates of the global burden of diabetes in 1990 ( 2 ) using newer data and different methods for estimating age-specific prevalence. (diabetesjournals.org)
- Three different asthma prevalence estimates are available from the National Health Interview Survey. (cdc.gov)
- The overall prevalence was slightly higher than previous estimates. (chron.com)
- Stanberry said the significance of the new study for Texas is that the data on prevalence of HPV in the United States are similar to the estimates made in cost-effectiveness studies of the vaccine, suggesting that earlier research is valid. (chron.com)
- OBJECTIVE -The goal of this study was to estimate the prevalence of diabetes and the number of people of all ages with diabetes for years 2000 and 2030. (diabetesjournals.org)
- RESULTS -The prevalence of diabetes for all age-groups worldwide was estimated to be 2.8% in 2000 and 4.4% in 2030. (diabetesjournals.org)
- To estimate and compare the prevalence of fibromyalgia by 2 different methods in Olmsted County, Minnesota. (prohealth.com)
- The first method was a retrospective review of medical records of potential cases of fibromyalgia in Olmsted County using the Rochester Epidemiology Project (from January 1, 2005, to December 31, 2009) to estimate the prevalence of diagnosed fibromyalgia in clinical practice. (prohealth.com)
- Given the increasing prevalence of obesity, it is likely that these figures provide an underestimate of future diabetes prevalence. (diabetesjournals.org)
- The number of people with diabetes is increasing due to population growth, aging, urbanization, and increasing prevalence of obesity and physical inactivity. (diabetesjournals.org)
- The genetic prevalence of this condition varies greatly according to the region of the world and the specific ancestry of an individual. (news-medical.net)
- Various processes influence the prevalence of genetic diseases in the population, in particular the mutation rate, selection and founder effect with genetic drift. (els.net)
- Zlotogora, Joël(Sep 2017) Genetic Disease: Prevalence. (els.net)
- National- and state-level prevalence of behaviours and diseases is usually calculated using data collected systematically from the population through major health surveys, such as the National Health and Nutrition Examination Survey (NHANES) in the United States . (britannica.com)
- The current asthma prevalence for boys (10%) was 30% higher than for girls (7.8%) (data not shown). (cdc.gov)
- The asthma attack prevalence rate for boys (5.9%) was 30% higher than the rate among girls (4.5%) (data not shown). (cdc.gov)
- There are two broad types of thalassemia, alpha-thalassemia and beta-thalassemia, each of which has a different prevalence among certain ethnicities or population groups. (news-medical.net)
- High mutation rate of a specific gene may be responsible for the high prevalence of the corresponding disease. (els.net)
- When race/ethnicity is considered, Puerto Ricans had a current asthma prevalence rate 125% higher than non-Hispanic white people and 80% higher than non-Hispanic black people. (cdc.gov)
- Females had a 40% higher prevalence rate than males. (cdc.gov)
- The adult prevalence rate is calculated by dividing the estimated number of adults living with HIV/AIDS at yearend by the total adult population at yearend. (indexmundi.com)
- The prevalence of diabetes is higher in men than women, but there are more women with diabetes than men. (diabetesjournals.org)
- The exceptions to the latter criterion were the study in China, for which a test meal was used ( 4 ), and the study in Tanzania ( 5 ), in which fasting glucose alone gave a higher prevalence of diabetes than a previous study that used the optimal WHO criteria. (diabetesjournals.org)
- When only race is considered, American Indians and Alaska Natives and black people had a 25% higher prevalence than white people. (cdc.gov)
- Puerto Ricans had the highest asthma attack prevalence, 140% higher than non-Hispanic white people. (cdc.gov)
- Prevalence of fibromyalgia: a population-based study in Olmsted County, Minnesota, utilizing the Rochester Epidemiology Project. (prohealth.com)
- The study, conducted by the U.S. Centers for Disease Control , provides the most comprehensive assessment of human papillomavirus prevalence among American women. (chron.com)
- Asthma attack prevalence decreased with age: 5.2% of children (3.8 million) had an asthma attack in the previous year compared to 3.9% of adults (8.4 million). (cdc.gov)
- Prevalence , in epidemiology , the proportion of a population with a disease or a particular condition at a specific point in time (point prevalence) or over a specified period of time (period prevalence). (britannica.com)
- Prevalence is often confused with incidence , which is concerned only with the measure of new cases in a population over a given interval of time. (britannica.com)
- For prevalence, the numerator is the number of existing cases or conditions, and the denominator is the total population or group. (britannica.com)
- For example, the prevalence of type 2 diabetes among children age 2 to 12 equals the number of children age 2 to 12 years with type 2 diabetes divided by the total number of children within that age range. (britannica.com)
- Prevalence denotes the number of cases of a condition present at a particular time or over a specified period, while incidence denotes the number of new cases occurring in a defined time period. (britannica.com)
- Prevalence of CAS refers to the number of people who are living with the condition in a given time period. (asha.org)
- The region of the world and ethnicity of the individual is an important factor in the prevalence of the gene mutations. (news-medical.net)
- This is also the first report of prevalence as assessed by the fibromyalgia research survey criteria. (prohealth.com)
- Quantifying the prevalence of diabetes and the number of people affected by diabetes, now and in the future, is important to allow rational planning and allocation of resources. (diabetesjournals.org)
- Prevalence is especially useful to health system planners and public health professionals. (britannica.com)
- Incidence contrasts with prevalence, which includes both new and existing cases. (britannica.com)