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What are the Key Study Designs in Epidemiology?

Epidemiologists employ various study designs, each with its strengths and limitations. The most common designs include:
- Descriptive Studies: These studies describe the occurrence of diseases in populations, focusing on the "who, what, when, and where."
- Analytical Studies: These studies investigate the causes or determinants of disease, often through case-control or cohort studies.
- Experimental Studies: These involve interventions, such as randomized controlled trials, to assess the effect of specific treatments or preventive measures.

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