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date: 23 June 2024


A Dictionary of Epidemiology

Miquel Porta

The degree to which the characteristics of a study (notably, of study subjects and setting, but sometimes also of exposures and outcomes) are similar to those of an external population that did not participate in the study. Representativeness is time-, place-, and context-specific. Although it is not necessary for studies with etiologic aims, it has an important place in health surveys and descriptive studies. Evidence-based health policies require population-representative information. It should neither be avoided nor uncritically sought.... ...

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