Epidemiologic inquiry: observational studies.

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Fam Med. 1988 Jul-Aug;20(4):289-94.

Epidemiologic inquiry: observational studies.

Family medicine

S C Zweig, R L Blake

Affiliations

Department of Family and Community Medicine, University of Missouri-Columbia 65201.

PMID: 3060390

Abstract

A major objective of epidemiologic investigation is to determine whether or not an association between an exposure and a condition exists in a human population. The presence of such an association cna be explored using three distinct strategies, the cohort, the case-control, and the cross-sectional approaches. This paper describes each of these research designs and discusses their advantages and disadvantages.

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Epidemiologic inquiry: observational studies.

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