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1. To describe the distribution and magnitude of health and disease problems in the human population. 2. To identify etiological factors in the pathogenesis of diseases. 3. To provide data essential to the planning, implementation, and evaluation of services for the prevention, control, and treatmenRead more
1. To describe the distribution and magnitude of health and disease problems in the human population.
2. To identify etiological factors in the pathogenesis of diseases.
3. To provide data essential to the planning, implementation, and evaluation of services for the prevention, control, and treatment of diseases and setting priorities among those services.
4. Study natural history and prognosis of diseases.
5. Evolute both existing and newly developed prevention and therapeutically measure.
6. Provide the foundation for developing public policy.
Epidemiology is the only way of asking some questions in medicine, one way of asking others (and no way at all to ask many). Seven ‘uses' of epidemiology have been described: 1. In historical study of the health of the community and of the rise and fall of diseases in the population; useful ‘projectRead more
Epidemiology is the only way of asking some questions in medicine, one way of asking others (and no way at all to ask many). Seven ‘uses’ of epidemiology have been described:
1. In historical study of the health of the community and of the rise and fall of diseases in the population; useful ‘projections’ into the future may also be possible.
2. For community diagnosis of the presence, nature and distribution of health and disease among the population, and the dimensions of these in incidence, prevalence, and mortality; taking into account that society is changing and health problems are changing.
3. To study the workings of health services. This begins with the determination of needs and resources, proceeds to analysis of services in action and, finally, attempts to appraise. Such studies can be comparative between various populations.
4. To estimate, from the common experience, the individual’s chances and risks of disease.
5. To help complete the clinical picture by including all types of cases in proportion; by relating clinical disease to the subclinical; by observing secular changes in the character of disease, and its picture in other countries.
6. In identifying syndromes from the distribution of clinical phenomena among sections of the population.
7. In the search for causes of health and disease, starting with the discovery of groups with high and low rates, studying these differences in relation to differences in ways of living; and, where possible, testing these notions in the actual practice among populations.
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