Descriptive studies categorize different diseases and analyze them based on which category they fall into. Descriptive studies do not typically have a hypothesis, but rather describe observed patterns of the disease.

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

Types of Epidemiological Studies

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

Descriptive Studies

Ecological Studies also referred to as correlational studies examine the correlation between specific exposure and disease rates in large groups and populations.

Ecological Studies

Etiological Studies also called Analytical Studies are studies conducted around individuals and specific hypotheses on how a certain disease accumulates.

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