The level of health of the individual, group, or population as subjectively assessed by the individual or by more objective measures.

The concept concerned with all aspects of providing and distributing health services to a patient population.

Branch of medicine concerned with the prevention and control of disease and disability, and the promotion of physical and mental health of the population on the international, national, state, or municipal level.

Systems for the delivery of drugs to target sites of pharmacological actions. Technologies employed include those concerning drug preparation, route of administration, site targeting, metabolism, and toxicity.

Decisions, usually developed by government policymakers, for determining present and future objectives pertaining to the health care system.

Innovation and improvement of the health care system by reappraisal, amendment of services, and removal of faults and abuses in providing and distributing health services to patients. It includes a re-alignment of health services and health insurance to maximum demographic elements (the unemployed, indigent, uninsured, elderly, inner cities, rural areas) with reference to coverage, hospitalization, pricing and cost containment, insurers' and employers' costs, pre-existing medical conditions, prescribed drugs, equipment, and services.

A systematic collection of factual data pertaining to health and disease in a human population within a given geographic area.

Encouraging consumer behaviors most likely to optimize health potentials (physical and psychosocial) through health information, preventive programs, and access to medical care.

The state wherein the person is well adjusted.

Delivery of the FETUS and PLACENTA under the care of an obstetrician or a health worker. Obstetric deliveries may involve physical, psychological, medical, or surgical interventions.

The state of the organism when it functions optimally without evidence of disease.

The degree to which individuals are inhibited or facilitated in their ability to gain entry to and to receive care and services from the health care system. Factors influencing this ability include geographic, architectural, transportational, and financial considerations, among others.

Statistical measures of utilization and other aspects of the provision of health care services including hospitalization and ambulatory care.

Public attitudes toward health, disease, and the medical care system.

Planning for needed health and/or welfare services and facilities.

Care which provides integrated, accessible health care services by clinicians who are accountable for addressing a large majority of personal health care needs, developing a sustained partnership with patients, and practicing in the context of family and community. (JAMA 1995;273(3):192)

The levels of excellence which characterize the health service or health care provided based on accepted standards of quality.

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.

Services for the diagnosis and treatment of disease and the maintenance of health.

Insurance providing coverage of medical, surgical, or hospital care in general or for which there is no specific heading.

Men and women working in the provision of health services, whether as individual practitioners or employees of health institutions and programs, whether or not professionally trained, and whether or not subject to public regulation. (From A Discursive Dictionary of Health Care, 1976)

The concept pertaining to the health status of inhabitants of the world.

Health services required by a population or community as well as the health services that the population or community is able and willing to pay for.

Education that increases the awareness and favorably influences the attitudes and knowledge relating to the improvement of health on a personal or community basis.

The optimal state of the mouth and normal functioning of the organs of the mouth without evidence of disease.

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)

A health care system which combines physicians, hospitals, and other medical services with a health plan to provide the complete spectrum of medical care for its customers. In a fully integrated system, the three key elements - physicians, hospital, and health plan membership - are in balance in terms of matching medical resources with the needs of purchasers and patients. (Coddington et al., Integrated Health Care: Reorganizing the Physician, Hospital and Health Plan Relationship, 1994, p7)

The amounts spent by individuals, groups, nations, or private or public organizations for total health care and/or its various components. These amounts may or may not be equivalent to the actual costs (HEALTH CARE COSTS) and may or may not be shared among the patient, insurers, and/or employers.

Knowledge, attitudes, and associated behaviors which pertain to health-related topics such as PATHOLOGIC PROCESSES or diseases, their prevention, and treatment. This term refers to non-health workers and health workers (HEALTH PERSONNEL).

Management of public health organizations or agencies.

The science of controlling or modifying those conditions, influences, or forces surrounding man which relate to promoting, establishing, and maintaining health.

The seeking and acceptance by patients of health service.

Variation in rates of disease occurrence and disabilities between population groups defined by socioeconomic characteristics such as age, ethnicity, economic resources, or gender and populations identified geographically or similar measures.

The promotion and maintenance of physical and mental health in the work environment.

Planning for the equitable allocation, apportionment, or distribution of available health resources.

Components of a national health care system which administer specific services, e.g., national health insurance.

Preferentially rated health-related activities or functions to be used in establishing health planning goals. This may refer specifically to PL93-641.

The activities and endeavors of the public health services in a community on any level.

Organized services to provide mental health care.

The status of health in rural populations.

The concept covering the physical and mental conditions of women.

Economic sector concerned with the provision, distribution, and consumption of health care services and related products.

Diagnostic, therapeutic and preventive health services provided for individuals in the community.

The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.

Attitudes of personnel toward their patients, other professionals, toward the medical care system, etc.

The status of health in urban populations.

Degree to which individuals have the capacity to obtain, process, and understand basic health information and services needed to make appropriate health decisions.

Organized services to provide health care for children.

A specialized agency of the United Nations designed as a coordinating authority on international health work; its aim is to promote the attainment of the highest possible level of health by all peoples.

Institutions which provide medical or health-related services.

Health services, public or private, in rural areas. The services include the promotion of health and the delivery of 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).

Planning that has the goals of improving health, improving accessibility to health services, and promoting efficiency in the provision of services and resources on a comprehensive basis for a whole community. (From Facts on File Dictionary of Health Care Management, 1988, p299)

Social and economic factors that characterize the individual or group within the social structure.

Planning for health resources at a regional or multi-state level.

The availability of HEALTH PERSONNEL. It includes the demand and recruitment of both professional and allied health personnel, their present and future supply and distribution, and their assignment and utilization.

Organized services to provide health care to expectant and nursing mothers.

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.

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.

Available manpower, facilities, revenue, equipment, and supplies to produce requisite health care and services.

Facilities which administer the delivery of health care services to people living in a community or neighborhood.

Services designed for HEALTH PROMOTION and prevention of disease.

An infant during the first month after birth.

Forms to which substances are incorporated to improve the delivery and the effectiveness of drugs. Drug carriers are used in drug-delivery systems such as the controlled-release technology to prolong in vivo drug actions, decrease drug metabolism, and reduce drug toxicity. Carriers are also used in designs to increase the effectiveness of drug delivery to the target sites of pharmacological actions. Liposomes, albumin microspheres, soluble synthetic polymers, DNA complexes, protein-drug conjugates, and carrier erythrocytes among others have been employed as biodegradable drug carriers.

A nursing specialty concerned with promoting and protecting the health of populations, using knowledge from nursing, social, and public health sciences to develop local, regional, state, and national health policy and research. It is population-focused and community-oriented, aimed at health promotion and disease prevention through educational, diagnostic, and preventive programs.

Extraction of the FETUS by means of abdominal HYSTEROTOMY.

Professions or other business activities directed to the cure and prevention of disease. For occupations of medical personnel who are not physicians but who are working in the fields of medical technology, physical therapy, etc., ALLIED HEALTH OCCUPATIONS is available.

Media that facilitate transportability of pertinent information concerning patient's illness across varied providers and geographic locations. Some versions include direct linkages to online consumer health information that is relevant to the health conditions and treatments related to a specific patient.

The physical condition of human reproductive systems.

Health insurance plans for employees, and generally including their dependents, usually on a cost-sharing basis with the employer paying a percentage of the premium.

Health services for employees, usually provided by the employer at the place of work.

The organization and administration of health services dedicated to the delivery of health care.

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.

Nanometer-sized particles that are nanoscale in three dimensions. They include nanocrystaline materials; NANOCAPSULES; METAL NANOPARTICLES; DENDRIMERS, and QUANTUM DOTS. The uses of nanoparticles include DRUG DELIVERY SYSTEMS and cancer targeting and imaging.

Services for the diagnosis and treatment of diseases in the aged and the maintenance of health in the elderly.

The introduction of functional (usually cloned) GENES into cells. A variety of techniques and naturally occurring processes are used for the gene transfer such as cell hybridization, LIPOSOMES or microcell-mediated gene transfer, ELECTROPORATION, chromosome-mediated gene transfer, TRANSFECTION, and GENETIC TRANSDUCTION. Gene transfer may result in genetically transformed cells and individual organisms.

Those actions designed to carry out recommendations pertaining to health plans or programs.

State plans prepared by the State Health Planning and Development Agencies which are made up from plans submitted by the Health Systems Agencies and subject to review and revision by the Statewide Health Coordinating Council.

The systematic application of information and computer sciences to public health practice, research, and learning.

Norms, criteria, standards, and other direct qualitative and quantitative measures used in determining the quality of health care.

An operating division of the US Department of Health and Human Services. It is concerned with the overall planning, promoting, and administering of programs pertaining to health and medical research. Until 1995, it was an agency of the United States PUBLIC HEALTH SERVICE.

Activities concerned with governmental policies, functions, etc.

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.

Organized services to provide health care to women. It excludes maternal care services for which MATERNAL HEALTH SERVICES is available.

Health care provided to specific cultural or tribal peoples which incorporates local customs, beliefs, and taboos.

Health care services related to human REPRODUCTION and diseases of the reproductive system. Services are provided to both sexes and usually by physicians in the medical or the surgical specialties such as REPRODUCTIVE MEDICINE; ANDROLOGY; GYNECOLOGY; OBSTETRICS; and PERINATOLOGY.

Studies designed to assess the efficacy of programs. They may include the evaluation of cost-effectiveness, the extent to which objectives are met, or impact.

Evaluation procedures that focus on both the outcome or status (OUTCOMES ASSESSMENT) of the patient at the end of an episode of care - presence of symptoms, level of activity, and mortality; and the process (ASSESSMENT, PROCESS) - what is done for the patient diagnostically and therapeutically.

Organized systems for providing comprehensive prepaid health care that have five basic attributes: (1) provide care in a defined geographic area; (2) provide or ensure delivery of an agreed-upon set of basic and supplemental health maintenance and treatment services; (3) provide care to a voluntarily enrolled group of persons; (4) require their enrollees to use the services of designated providers; and (5) receive reimbursement through a predetermined, fixed, periodic prepayment made by the enrollee without regard to the degree of services provided. (From Facts on File Dictionary of Health Care Management, 1988)

A geographic area defined and served by a health program or institution.

Voluntary groups of people representing diverse interests in the community such as hospitals, businesses, physicians, and insurers, with the principal objective to improve health care cost effectiveness.

Recommendations for directing health planning functions and policies. These may be mandated by PL93-641 and issued by the Department of Health and Human Services for use by state and local planning agencies.

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.

Longitudinal patient-maintained records of individual health history and tools that allow individual control of access.

Health services, public or private, in urban areas. The services include the promotion of health and the delivery of health care.

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.

Elements of limited time intervals, contributing to particular results or situations.

The concept covering the physical and mental conditions of men.

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.

Health care workers specially trained and licensed to assist and support the work of health professionals. Often used synonymously with paramedical personnel, the term generally refers to all health care workers who perform tasks which must otherwise be performed by a physician or other health professional.

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.

The health status of the family as a unit including the impact of the health of one member of the family on the family as a unit and on individual family members; also, the impact of family organization or disorganization on the health status of its members.

Organized services to provide health care to adolescents, ages ranging from 13 through 18 years.

The inhabitants of rural areas or of small towns classified as rural.

Financial resources provided for activities related to health planning and development.

A generic concept reflecting concern with the modification and enhancement of life attributes, e.g., physical, political, moral and social environment; the overall condition of a human life.

An interactive process whereby members of a community are concerned for the equality and rights of all.

Differences in access to or availability of medical facilities and services.

Diagnostic, therapeutic and preventive mental health services provided for individuals in the community.

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.

Educational institutions for individuals specializing in the field of public health.

Providing for the full range of personal health services for diagnosis, treatment, follow-up and rehabilitation of patients.

Community or individual involvement in the decision-making process.

The decision process by which individuals, groups or institutions establish policies pertaining to plans, programs or procedures.

Any type of research that employs nonnumeric information to explore individual or group characteristics, producing findings not arrived at by statistical procedures or other quantitative means. (Qualitative Inquiry: A Dictionary of Terms Thousand Oaks, CA: Sage Publications, 1997)

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.

Preventive health services provided for students. It excludes college or university students.

Federal, state, or local government organized methods of financial assistance.

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.

Techniques and strategies which include the use of coding sequences and other conventional or radical means to transform or modify cells for the purpose of treating or reversing disease conditions.

A cabinet department in the Executive Branch of the United States Government concerned with administering those agencies and offices having programs pertaining to health and human services.

Systematic identification of a population's needs or the assessment of individuals to determine the proper level of services needed.

Educational attainment or level of education of individuals.

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.

Results of conception and ensuing pregnancy, including LIVE BIRTH; STILLBIRTH; SPONTANEOUS ABORTION; INDUCED ABORTION. The outcome may follow natural or artificial insemination or any of the various ASSISTED REPRODUCTIVE TECHNIQUES, such as EMBRYO TRANSFER or FERTILIZATION IN VITRO.

Application of marketing principles and techniques to maximize the use of health care resources.

DNA molecules capable of autonomous replication within a host cell and into which other DNA sequences can be inserted and thus amplified. Many are derived from PLASMIDS; BACTERIOPHAGES; or VIRUSES. They are used for transporting foreign genes into recipient cells. Genetic vectors possess a functional replicator site and contain GENETIC MARKERS to facilitate their selective recognition.

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)

That distinct portion of the institutional, industrial, or economic structure of a country that is controlled or owned by non-governmental, private interests.

Community health education events focused on prevention of disease and promotion of health through audiovisual exhibits.

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.

The process of formulating, improving, and expanding educational, managerial, or service-oriented work plans (excluding computer program development).

Facilities which administer the delivery of health care services to mothers and children.

A non-medical term defined by the lay public as a food that has little or no preservatives, which has not undergone major processing, enrichment or refinement and which may be grown without pesticides. (from Segen, The Dictionary of Modern Medicine, 1992)

A stratum of people with similar position and prestige; includes social stratification. Social class is measured by criteria such as education, occupation, and income.

Studies in which variables relating to an individual or group of individuals are assessed over a period of time.

Generally refers to the amount of protection available and the kind of loss which would be paid for under an insurance contract with an insurer. (Slee & Slee, Health Care Terms, 2d ed)

The transfer of information from experts in the medical and public health fields to patients and the public. The study and use of communication strategies to inform and influence individual and community decisions that enhance health.

A constituent organization of the DEPARTMENT OF HEALTH AND HUMAN SERVICES concerned with protecting and improving the health of the nation.

Services designed to promote, maintain, or restore dental health.

The interaction of persons or groups of persons representing various nations in the pursuit of a common goal or interest.

The purposes, missions, and goals of an individual organization or its units, established through administrative processes. It includes an organization's long-range plans and administrative philosophy.

Relating to the size of solids.

The interactions between representatives of institutions, agencies, or organizations.

The inhabitants of a city or town, including metropolitan areas and suburban areas.

Descriptions and evaluations of specific health care organizations.

Payment by a third-party payer in a sum equal to the amount expended by a health care provider or facility for health services rendered to an insured or program beneficiary. (From Facts on File Dictionary of Health Care Management, 1988)

A method of comparing the cost of a program with its expected benefits in dollars (or other currency). The benefit-to-cost ratio is a measure of total return expected per unit of money spent. This analysis generally excludes consideration of factors that are not measured ultimately in economic terms. Cost effectiveness compares alternative ways to achieve a specific set of results.

Contracts between an insurer and a subscriber or a group of subscribers whereby a specified set of health benefits is provided in return for a periodic premium.

Elements of residence that characterize a population. They are applicable in determining need for and utilization of health services.

A course or method of action selected, usually by a government, from among alternatives to guide and determine present and future decisions.

Conditions or pathological processes associated with pregnancy. They can occur during or after pregnancy, and range from minor discomforts to serious diseases that require medical interventions. They include diseases in pregnant females, and pregnancies in females with diseases.

Organized efforts by communities or organizations to improve the health and well-being of the mother.

Demographic and epidemiologic changes that have occurred in the last five decades in many developing countries and that are characterized by major growth in the number and proportion of middle-aged and elderly persons and in the frequency of the diseases that occur in these age groups. The health transition is the result of efforts to improve maternal and child health via primary care and outreach services and such efforts have been responsible for a decrease in the birth rate; reduced maternal mortality; improved preventive services; reduced infant mortality, and the increased life expectancy that defines the transition. (From Ann Intern Med 1992 Mar 15;116(6):499-504)

Medical problems associated with OBSTETRIC LABOR, such as BREECH PRESENTATION; PREMATURE OBSTETRIC LABOR; HEMORRHAGE; or others. These complications can affect the well-being of the mother, the FETUS, or both.

Organized groups serving in advisory capacities related to health planning activities.

Health insurance coverage for all persons in a state or country, rather than for some subset of the population. It may extend to the unemployed as well as to the employed; to aliens as well as to citizens; for pre-existing conditions as well as for current illnesses; for mental as well as for physical conditions.

The smallest continent and an independent country, comprising six states and two territories. Its capital is Canberra.

The area of a nation's economy that is tax-supported and under government control.

The practice of nursing in the work environment.

The interaction of two or more persons or organizations directed toward a common goal which is mutually beneficial. An act or instance of working or acting together for a common purpose or benefit, i.e., joint action. (From Random House Dictionary Unabridged, 2d ed)

Administrative units of government responsible for policy making and management of governmental activities.

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.

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.

Time period from 1901 through 2000 of the common era.

Education and training in PUBLIC HEALTH for the practice of the profession.

All organized methods of funding.

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.

Small-scale tests of methods and procedures to be used on a larger scale if the pilot study demonstrates that these methods and procedures can work.

A system of medical care regulated, controlled and financed by the government, in which the government assumes responsibility for the health needs of the population.

Support systems that provide assistance and encouragement to individuals with physical or emotional disabilities in order that they may better cope. Informal social support is usually provided by friends, relatives, or peers, while formal assistance is provided by churches, groups, etc.

The circumstances in which people are born, grow up, live, work, and age, as well as the systems put in place to deal with illness. These circumstances are in turn shaped by a wider set of forces: economics, social policies, and politics (http://www.cdc.gov/socialdeterminants/).

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 insurance plans intended to reduce unnecessary health care costs through a variety of mechanisms, including: economic incentives for physicians and patients to select less costly forms of care; programs for reviewing the medical necessity of specific services; increased beneficiary cost sharing; controls on inpatient admissions and lengths of stay; the establishment of cost-sharing incentives for outpatient surgery; selective contracting with health care providers; and the intensive management of high-cost health care cases. The programs may be provided in a variety of settings, such as HEALTH MAINTENANCE ORGANIZATIONS and PREFERRED PROVIDER ORGANIZATIONS.

Stress wherein emotional factors predominate.

Health as viewed from the perspective that humans and other organisms function as complete, integrated units rather than as aggregates of separate parts.

The state of being engaged in an activity or service for wages or salary.

Inhaling and exhaling the smoke of burning TOBACCO.

A group of people with a common cultural heritage that sets them apart from others in a variety of social relationships.

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.

Management of the organization of HEALTH FACILITIES.

The field of information science concerned with the analysis and dissemination of medical data through the application of computers to various aspects of health care and medicine.

Onset of OBSTETRIC LABOR before term (TERM BIRTH) but usually after the FETUS has become viable. In humans, it occurs sometime during the 29th through 38th week of PREGNANCY. TOCOLYSIS inhibits premature labor and can prevent the BIRTH of premature infants (INFANT, PREMATURE).

Individuals or groups with no or inadequate health insurance coverage. Those falling into this category usually comprise three primary groups: the medically indigent (MEDICAL INDIGENCY); those whose clinical condition makes them medically uninsurable; and the working uninsured.

Customer satisfaction or dissatisfaction with a benefit or service received.

The obligations and accountability assumed in carrying out actions or ideas on behalf of others.

A systematic collection of factual data pertaining to dental or oral health and disease in a human population within a given geographic area.

Statistical interpretation and description of a population with reference to distribution, composition, or structure.

Payment by individuals or their family for health care services which are not covered by a third-party payer, either insurance or medical assistance.

New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms.

Health care provided to individuals.

Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).

The teaching or training of patients concerning their own health needs.

Organized services to provide information on any questions an individual might have using databases and other sources. (From Random House Unabridged Dictionary, 2d ed)

The process by which decisions are made in an institution or other organization.

A plan for collecting and utilizing data so that desired information can be obtained with sufficient precision or so that an hypothesis can be tested properly.

Strongly cationic polymer that binds to certain proteins; used as a marker in immunology, to precipitate and purify enzymes and lipids. Synonyms: aziridine polymer; Epamine; Epomine; ethylenimine polymer; Montrek; PEI; Polymin(e).