Fixed population: a population whose membership is permanent.The population of Hiroshima, Japan, during an atomic bomb explosion in WWII
Dynamic or open population: membership of this population is defined by a changeable state or condition (resident of Boston)
Steady-state: the number exerting a population is equal to the number leaving (University students)


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Principles of Epidemiology. (n.d.). United States Center for Disease Control. Retrieved July 19, 2020, from https://www.cdc.gov/csels/dsepd/ss1978/lesson6/section2.html

Principles of Epidemiology

The authors of this book are: Ann Aschengrau and George R. Seage

Essentials of Epidemiology in Public Health

Reference of Foundations of Large Language Models Course

Descriptive Studies
Correlational, or Ecological Studies
Etiological, or Analytical Studies

Types of Epidemiological Studies

In epidemiology, prevalence is the proportion of a particular population found to be affected by a medical condition at a specific time.

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