Epidemiology helps public health professionals understand how health events affect populations and what can be done to prevent or control them. This lesson introduces the definition, objectives, and public health applications of epidemiology.
Epidemiology is the scientific study of the distribution and determinants of diseases and other health outcomes in populations. Its purpose is to develop ways to control health problems, limit the consequences of illness, and maximize health.
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What is epidemiology?
The scientific study of the distribution and determinants of diseases and other health outcomes in populations, aiming to control health problems, limit illness consequences, and maximize health.
What do distribution and determinants mean in epidemiology?
Distribution describes how health events vary by place, time, and the characteristics of affected people. Determinants are causes and contributing factors associated with those events.
What are five major objectives of epidemiology?
Identify disease causes and risk factors; identify transmission; determine disease extent in populations; evaluate preventive and therapeutic measures; and provide a foundation for prevention and health-promotion policy.
How can epidemiology help public health nurses prepare for outbreaks?
By estimating disease extent and using epidemiological models, nurses can plan health services and estimate needs such as vaccine supplies for expected outbreaks.
How can epidemiological evidence support policy and health education?
Evidence can guide education for at-risk communities and support advocacy for policy at local, state, or federal levels.
Quiz questions
Which approach best describes epidemiological data work?Answer: Collecting, analyzing, and interpreting data systematically and without bias.
Which fields contribute to epidemiology's multidisciplinary approach?Answer: Biological, social, economic, and behavioral sciences, alongside biostatistics and informatics.
Which activity is a stated objective of epidemiology?Answer: Evaluating preventive and therapeutic measures used in health care.
In public health, what does mortality measure?Answer: Death in a population.
How should epidemiological evidence be used when making public health decisions?Answer: Interpret the findings carefully and consider the needs of the population served.
Based on Population Health for Nurses by Jessica Ochs, Sherry L. Roper, Susan M. Schwartz (OpenStax), licensed CC BY 4.0. Adapted into a summary, flashcards and quizzes.