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Developmental epidemiology: a review of three key measures of effect
1College of Education and Human Development, University of Maine, USA. shihfen.tu@umit.maine.edu
Abstract:
Provide readers with a background on 3 widely used epidemiological measures of effect: the risk ratio, the odds ratio, and the population attributable fraction (PAF). The risk ratio and the odds ratio each assess impact of a risk factor on an individual person. The PAF assesses the impact of a risk factor on the overall number of cases of a disorder in a community. Each of these measures is applied to a hypothetical example, and issues regarding their use are discussed.