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Military Personnel: Persons including soldiers involved with the armed forces.Military Medicine: The practice of medicine as applied to special circumstances associated with military operations.Hospitals, Military: Hospitals which provide care for the military personnel and usually for their dependents.Military Facilities: Areas designated for use by the armed forces personnel.Military Psychiatry: Branch of psychiatry concerned with problems related to the prevention, diagnosis, etiology, and treatment of mental or emotional disorders of Armed Forces personnel.Hospitals, Teaching: Hospitals engaged in educational and research programs, as well as providing medical care to the patients.War: Hostile conflict between organized groups of people.Military Dentistry: The practice of dentistry as applied to special circumstances associated with military operations.Military Nursing: The practice of nursing in military environments.Hospitals, General: Large hospitals with a resident medical staff which provides continuous care to maternity, surgical and medical patients.Military ScienceHospitals, University: Hospitals maintained by a university for the teaching of medical students, postgraduate training programs, and clinical research.Hospital Costs: The expenses incurred by a hospital in providing care. The hospital costs attributed to a particular patient care episode include the direct costs plus an appropriate proportion of the overhead for administration, personnel, building maintenance, equipment, etc. Hospital costs are one of the factors which determine HOSPITAL CHARGES (the price the hospital sets for its services).IraqAfghanistanAfghan Campaign 2001-: Multinational coalition military operation initiated in October 2001 to counter terrorism and bring security to AFGHANISTAN in collaboration with Afghan forces.Combat Disorders: Neurotic reactions to unusual, severe, or overwhelming military stress.Iraq War, 2003-2011: An armed intervention involving multi-national forces in the country of IRAQ.Hospitals, Urban: Hospitals located in metropolitan areas.Nursing Staff, Hospital: Personnel who provide nursing service to patients in a hospital.United StatesEconomics, Hospital: Economic aspects related to the management and operation of a hospital.Hospitals, Pediatric: Special hospitals which provide care for ill children.Veterans: Former members of the armed services.Hospital Bed Capacity: The number of beds which a hospital has been designed and constructed to contain. It may also refer to the number of beds set up and staffed for use.Hospitals, Special: Hospitals which provide care for a single category of illness with facilities and staff directed toward a specific service.Hospitals, District: Government-controlled hospitals which represent the major health facility for a designated geographic area.Hospitals, Private: A class of hospitals that includes profit or not-for-profit hospitals that are controlled by a legal entity other than a government agency. (Hospital Administration Terminology, AHA, 2d ed)Blast Injuries: Injuries resulting when a person is struck by particles impelled with violent force from an explosion. Blast causes pulmonary concussion and hemorrhage, laceration of other thoracic and abdominal viscera, ruptured ear drums, and minor effects in the central nervous system. (From Dorland, 27th ed)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.Financial Management, Hospital: The obtaining and management of funds for hospital needs and responsibility for fiscal affairs.Hospitalization: The confinement of a patient in a hospital.Emergency Service, Hospital: Hospital department responsible for the administration and provision of immediate medical or surgical care to the emergency patient.Length of Stay: The period of confinement of a patient to a hospital or other health facility.Hospital Planning: Areawide planning for hospitals or planning of a particular hospital unit on the basis of projected consumer need. This does not include hospital design and construction or architectural plans.Hospital Charges: The prices a hospital sets for its services. HOSPITAL COSTS (the direct and indirect expenses incurred by the hospital in providing the services) are one factor in the determination of hospital charges. Other factors may include, for example, profits, competition, and the necessity of recouping the costs of uncompensated care.Hospital Departments: Major administrative divisions of the hospital.Hospitals, Psychiatric: Special hospitals which provide care to the mentally ill patient.Hospital Records: Compilations of data on hospital activities and programs; excludes patient medical records.Hospital Units: Those areas of the hospital organization not considered departments which provide specialized patient care. They include various hospital special care wards.World War II: Global conflict involving countries of Europe, Africa, Asia, and North America that occurred between 1939 and 1945.United States Government Agencies: Agencies of the FEDERAL GOVERNMENT of the United States.Aviation: Design, development, manufacture, and operation of heavier-than-air AIRCRAFT.Equipment and Supplies, Hospital: Any materials used in providing care specifically in the hospital.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.Libraries, Hospital: Information centers primarily serving the needs of hospital medical staff and sometimes also providing patient education and other services.Veterans Health: The concept covering the physical and mental conditions of VETERANS.Surgery Department, Hospital: Hospital department which administers all departmental functions and the provision of surgical diagnostic and therapeutic services.Patient Admission: The process of accepting patients. The concept includes patients accepted for medical and nursing care in a hospital or other health care institution.Patient Discharge: The administrative process of discharging the patient, alive or dead, from hospitals or other health facilities.Vietnam Conflict: A conflict occurring from 1954 through 1975 within the Republic of Vietnam. It involved neighboring nations and the United States and other members of the Southeast Asia Treaty Organization.Hospitals, County: Hospitals controlled by the county government.Outpatient Clinics, Hospital: Organized services in a hospital which provide medical care on an outpatient basis.United States Department of Defense: A cabinet department in the Executive Branch of the United States Government whose mission is to provide the military forces needed to deter WARFARE and to protect the security of our country.Wounds and Injuries: Damage inflicted on the body as the direct or indirect result of an external force, with or without disruption of structural continuity.Hospital Bed Capacity, 500 and overCross Infection: Any infection which a patient contracts in a health-care institution.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.Disease Outbreaks: Sudden increase in the incidence of a disease. The concept includes EPIDEMICS and PANDEMICS.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.Gulf War: United Nations' action to intervene in conflict between the nation of Kuwait and occupying Iraqi forces, occurring from 1990 through 1991.Time Factors: Elements of limited time intervals, contributing to particular results or situations.American Hospital Association: A professional society in the United States whose membership is composed of hospitals.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.Hospitals, Municipal: Hospitals controlled by the city government.Food Service, Hospital: Hospital department that manages and supervises the dietary program in accordance with the patients' requirements.Hospital Information Systems: Integrated, computer-assisted systems designed to store, manipulate, and retrieve information concerned with the administrative and clinical aspects of providing medical services within the hospital.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.Obstetrics and Gynecology Department, Hospital: Hospital department responsible for the administration and management of services provided for obstetric and gynecologic patients.Stress Disorders, Post-Traumatic: A class of traumatic stress disorders with symptoms that last more than one month. There are various forms of post-traumatic stress disorder, depending on the time of onset and the duration of these stress symptoms. In the acute form, the duration of the symptoms is between 1 to 3 months. In the chronic form, symptoms last more than 3 months. With delayed onset, symptoms develop more than 6 months after the traumatic event.KuwaitInfant, Newborn: An infant during the first month after birth.Hospitals, Religious: Private hospitals that are owned or sponsored by religious organizations.Naval Medicine: The practice of medicine concerned with conditions affecting the health of individuals associated with the marine environment.Korean War: An armed conflict between Communist and non-Communist forces in Korea from June 25, 1950, to July 27, 1953. The parties included United Nations forces from 15 member nations under United States command against military from North Korea and the Peoples Republic of China.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.History, 20th Century: Time period from 1901 through 2000 of the common era.Persian Gulf Syndrome: Unexplained symptoms reported by veterans of the Persian Gulf War with Iraq in 1991. The symptoms reported include fatigue, skin rash, muscle and joint pain, headaches, loss of memory, shortness of breath, gastrointestinal and respiratory symptoms, and extreme sensitivity to commonly occurring chemicals. (Nature 1994 May 5;369(6475):8)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.Bosnia-Herzegovina: A country of eastern Europe, formerly the province of Bosnia in Yugoslavia, uniting with the province of Herzegovina to form the Republic of Bosnia and Herzegovina in 1946. It was created 7 April 1992 as a result of the division of Yugoslavia and recognized by the United States as an independent state. Bosnia takes is name from the river Bosna, in turn from the Indoeuropean root bhog, "current"; Herzegovina is from the Serbian herceg (duke) + -ov (the possessive) + -ina (country or territory).Hospitals, Maternity: Special hospitals which provide care to women during pregnancy and parturition.Diagnosis-Related Groups: A system for classifying patient care by relating common characteristics such as diagnosis, treatment, and age to an expected consumption of hospital resources and length of stay. Its purpose is to provide a framework for specifying case mix and to reduce hospital costs and reimbursements and it forms the cornerstone of the prospective payment system.Great BritainInpatients: Persons admitted to health facilities which provide board and room, for the purpose of observation, care, diagnosis or treatment.Patient Readmission: Subsequent admissions of a patient to a hospital or other health care institution for treatment.Nursing Service, Hospital: The hospital department which is responsible for the organization and administration of nursing activities.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.Hospital Shared Services: Cooperation among hospitals for the purpose of sharing various departmental services, e.g., pharmacy, laundry, data processing, etc.Laboratories, Hospital: Hospital facilities equipped to carry out investigative procedures.Logistic 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.Accidents, AviationFollow-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.Chemical Warfare: Tactical warfare using incendiary mixtures, smokes, or irritant, burning, or asphyxiating gases.Anti-Bacterial Agents: Substances that reduce the growth or reproduction of BACTERIA.Cardiology Service, Hospital: The hospital department responsible for the administration and provision of diagnostic and therapeutic services for the cardiac patient.Hospitals, Veterans: Hospitals providing medical care to veterans of wars.Outcome Assessment (Health Care): Research aimed at assessing the quality and effectiveness of health care as measured by the attainment of a specified end result or outcome. Measures include parameters such as improved health, lowered morbidity or mortality, and improvement of abnormal states (such as elevated blood pressure).Hospital Bed Capacity, under 100Defoliants, Chemical: Herbicides that remove leaves from trees and growing plants. They may be either organic or inorganic. Several of the more persistent types have been used in military operations and many are toxic. (From Hawley's Condensed Chemical Dictionary, 11th ed)EnglandQuality of Health Care: The levels of excellence which characterize the health service or health care provided based on accepted standards of quality.Costs and Cost Analysis: Absolute, comparative, or differential costs pertaining to services, institutions, resources, etc., or the analysis and study of these costs.Hospital Bed Capacity, 100 to 299Adenovirus Infections, Human: Respiratory and conjunctival infections caused by 33 identified serotypes of human adenoviruses.Transportation of Patients: Conveying ill or injured individuals from one place to another.Wounds, Gunshot: Disruption of structural continuity of the body as a result of the discharge of firearms.IsraelPopulation 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.Aerospace Medicine: That branch of medicine dealing with the studies and effects of flight through the atmosphere or in space upon the human body and with the prevention or cure of physiological or psychological malfunctions arising from these effects. (from NASA Thesaurus)History, 19th Century: Time period from 1801 through 1900 of the common era.Hospitals, Packaged: Hospital equipment and supplies, packaged for long-term storage, sufficient to set up a general hospital in an emergency situation. They are also called Packaged Disaster Hospitals and formerly Civil Defense Emergency Hospitals.BrazilBed Occupancy: A measure of inpatient health facility use based upon the average number or proportion of beds occupied for a given period of time.Hospitals, AnimalDental Service, Hospital: Hospital department providing dental care.Tertiary Care Centers: A medical facility which provides a high degree of subspecialty expertise for patients from centers where they received SECONDARY CARE.United States Department of Veterans Affairs: A cabinet department in the Executive Branch of the United States Government concerned with overall planning, promoting, and administering programs pertaining to VETERANS. It was established March 15, 1989 as a Cabinet-level position.Emergency Medical Services: Services specifically designed, staffed, and equipped for the emergency care of patients.Health Facility Size: The physical space or dimensions of a facility. Size may be indicated by bed capacity.Biological Warfare: Warfare involving the use of living organisms or their products as disease etiologic agents against people, animals, or plants.Purchasing, Hospital: Hospital department responsible for the purchasing of supplies and equipment.Smallpox Vaccine: A live VACCINIA VIRUS vaccine of calf lymph or chick embryo origin, used for immunization against smallpox. It is now recommended only for laboratory workers exposed to smallpox virus. Certain countries continue to vaccinate those in the military service. Complications that result from smallpox vaccination include vaccinia, secondary bacterial infections, and encephalomyelitis. (Dorland, 28th ed)Referral and Consultation: The practice of sending a patient to another program or practitioner for services or advice which the referring source is not prepared to provide.Acute Disease: Disease having a short and relatively severe course.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)Intensive Care Units: Hospital units providing continuous surveillance and care to acutely ill patients.Medical Audit: A detailed review and evaluation of selected clinical records by qualified professional personnel for evaluating quality of medical care.Patient Transfer: Interfacility or intrahospital transfer of patients. Intrahospital transfer is usually to obtain a specific kind of care and interfacility transfer is usually for economic reasons as well as for the type of care provided.SingaporeNurseries, Hospital: Hospital facilities which provide care for newborn infants.Wounds, Penetrating: Wounds caused by objects penetrating the skin.Ear Protective Devices: Personal devices for protection of the ears from loud or high intensity noise, water, or cold. These include earmuffs and earplugs.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.Military HygieneMedicare: Federal program, created by Public Law 89-97, Title XVIII-Health Insurance for the Aged, a 1965 amendment to the Social Security Act, that provides health insurance benefits to persons over the age of 65 and others eligible for Social Security benefits. It consists of two separate but coordinated programs: hospital insurance (MEDICARE PART A) and supplementary medical insurance (MEDICARE PART B). (Hospital Administration Terminology, AHA, 2d ed and A Discursive Dictionary of Health Care, US House of Representatives, 1976)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.Psychiatric Department, Hospital: Hospital department responsible for the organization and administration of psychiatric services.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.Ownership: The legal relation between an entity (individual, group, corporation, or-profit, secular, government) and an object. The object may be corporeal, such as equipment, or completely a creature of law, such as a patent; it may be movable, such as an animal, or immovable, such as a building.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.Postoperative Complications: Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.Health Services Research: The integration of epidemiologic, sociological, economic, and other analytic sciences in the study of health services. Health services research is usually concerned with relationships between need, demand, supply, use, and outcome of health services. The aim of the research is evaluation, particularly in terms of structure, process, output, and outcome. (From Last, Dictionary of Epidemiology, 2d ed)Hearing Loss, Noise-Induced: Hearing loss due to exposure to explosive loud noise or chronic exposure to sound level greater than 85 dB. The hearing loss is often in the frequency range 4000-6000 hertz.Infection Control: Programs of disease surveillance, generally within health care facilities, designed to investigate, prevent, and control the spread of infections and their causative microorganisms.Fractures, Stress: Fractures due to the strain caused by repetitive exercise. They are thought to arise from a combination of MUSCLE FATIGUE and bone failure, and occur in situations where BONE REMODELING predominates over repair. The most common sites of stress fractures are the METATARSUS; FIBULA; TIBIA; and FEMORAL NECK.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.Housekeeping, Hospital: Hospital department which manages and provides the required housekeeping functions in all areas of the hospital.Quality Indicators, Health Care: Norms, criteria, standards, and other direct qualitative and quantitative measures used in determining the quality of health care.Oncology Service, Hospital: The hospital department responsible for the administration and provision of diagnostic and therapeutic services for the cancer patient.Relief Work: Assistance, such as money, food, or shelter, given to the needy, aged, or victims of disaster. It is usually granted on a temporary basis. (From The American Heritage Dictionary, 2d college ed)Surgical Procedures, Operative: Operations carried out for the correction of deformities and defects, repair of injuries, and diagnosis and cure of certain diseases. (Taber, 18th ed.)Health Care Surveys: Statistical measures of utilization and other aspects of the provision of health care services including hospitalization and ambulatory care.Djibouti: A republic in eastern Africa, on the Gulf of Aden at the entrance to the Red Sea. Djibouti is also the name of its capital.Personnel Delegation: To entrust to the care or management of another, to transfer or to assign tasks within an organizational or administrative unit or structureUtilization Review: An organized procedure carried out through committees to review admissions, duration of stay, professional services furnished, and to evaluate the medical necessity of those services and promote their most efficient use.CaliforniaFrance: 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.Nigeria: A republic in western Africa, south of NIGER between BENIN and CAMEROON. Its capital is Abuja.Sex 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.Mental 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.ExplosionsCivil Rights: Legal guarantee protecting the individual from attack on personal liberties, right to fair trial, right to vote, and freedom from discrimination on the basis of race, color, religion, sex, age, disability, or national origin. (from http://www.usccr.gov/ accessed 1/31/2003)Middle East: The region of southwest Asia and northeastern Africa usually considered as extending from Libya on the west to Afghanistan on the east. (From Webster's New Geographical Dictionary, 1988)Pregnancy: The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.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.Health Facility Merger: The combining of administrative and organizational resources of two or more health care facilities.Medical Records: Recording of pertinent information concerning patient's illness or illnesses.Germany, WestRed Cross: International collective of humanitarian organizations led by volunteers and guided by its Congressional Charter and the Fundamental Principles of the International Red Cross Movement, to provide relief to victims of disaster and help people prevent, prepare for, and respond to emergencies.Medication Systems, Hospital: Overall systems, traditional or automated, to provide medication to patients in hospitals. Elements of the system are: handling the physician's order, transcription of the order by nurse and/or pharmacist, filling the medication order, transfer to the nursing unit, and administration to the patient.Hospitals, Chronic Disease: Hospitals which provide care to patients with long-term illnesses.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.Chi-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.Emergencies: Situations or conditions requiring immediate intervention to avoid serious adverse results.Patient Satisfaction: The degree to which the individual regards the health care service or product or the manner in which it is delivered by the provider as useful, effective, or beneficial.Stress Disorders, Traumatic: Anxiety disorders manifested by the development of characteristic symptoms following a psychologically traumatic event that is outside the normal range of usual human experience. Symptoms include re-experiencing the traumatic event, increased arousal, and numbing of responsiveness to or reduced involvement with the external world. Traumatic stress disorders can be further classified by the time of onset and the duration of these symptoms.Bombs: A weapon designed to explode when deployed. It frequently refers to a hollow case filled with EXPLOSIVE AGENTS.Personnel Administration, Hospital: Management activities concerned with hospital employees.Catchment Area (Health): A geographic area defined and served by a health program or institution.Registries: The systems and processes involved in the establishment, support, management, and operation of registers, e.g., disease registers.QatarRegression 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.Formularies, Hospital: Formularies concerned with pharmaceuticals prescribed in hospitals.Chemical Warfare Agents: Chemicals that are used to cause the disturbance, disease, or death of humans during WARFARE.Hospital-Physician Relations: Includes relationships between hospitals, their governing boards, and administrators in regard to physicians, whether or not the physicians are members of the medical staff or have medical staff privileges.Economic Competition: The effort of two or more parties to secure the business of a third party by offering, usually under fair or equitable rules of business practice, the most favorable terms.Admitting Department, Hospital: Hospital department responsible for the flow of patients and the processing of admissions, discharges, transfers, and also most procedures to be carried out in the event of a patient's death.Canada: The largest country in North America, comprising 10 provinces and three territories. Its capital is Ottawa.Health Resources: Available manpower, facilities, revenue, equipment, and supplies to produce requisite health care and services.2,4,5-Trichlorophenoxyacetic Acid: An herbicide with strong irritant properties. Use of this compound on rice fields, orchards, sugarcane, rangeland, and other noncrop sites was terminated by the EPA in 1985. (From Merck Index, 11th ed)Respiratory Tract Infections: Invasion of the host RESPIRATORY SYSTEM by microorganisms, usually leading to pathological processes or diseases.Emergency Treatment: First aid or other immediate intervention for accidents or medical conditions requiring immediate care and treatment before definitive medical and surgical management can be procured.Child, Hospitalized: Child hospitalized for short term care.Musculoskeletal System: The MUSCLES, bones (BONE AND BONES), and CARTILAGE of the body.Brain Injuries: Acute and chronic (see also BRAIN INJURIES, CHRONIC) injuries to the brain, including the cerebral hemispheres, CEREBELLUM, and BRAIN STEM. Clinical manifestations depend on the nature of injury. Diffuse trauma to the brain is frequently associated with DIFFUSE AXONAL INJURY or COMA, POST-TRAUMATIC. Localized injuries may be associated with NEUROBEHAVIORAL MANIFESTATIONS; HEMIPARESIS, or other focal neurologic deficits.Personnel Staffing and Scheduling: The selection, appointing, and scheduling of personnel.Travel: Aspects of health and disease related to travel.Ambulatory Care: Health care services provided to patients on an ambulatory basis, rather than by admission to a hospital or other health care facility. The services may be a part of a hospital, augmenting its inpatient services, or may be provided at a free-standing facility.Multi-Institutional Systems: Institutional systems consisting of more than one health facility which have cooperative administrative arrangements through merger, affiliation, shared services, or other collective ventures.Quality Assurance, Health Care: Activities and programs intended to assure or improve the quality of care in either a defined medical setting or a program. The concept includes the assessment or evaluation of the quality of care; identification of problems or shortcomings in the delivery of care; designing activities to overcome these deficiencies; and follow-up monitoring to ensure effectiveness of corrective steps.Noise, Occupational: Noise present in occupational, industrial, and factory situations.