Attributable risk: advantages of a broad definition of exposure published erratum appears in Am J Epidemiol 1994 Oct 1;140(7):668
American Journal of Epidemiology, 140 (4):
303-309 (1994)2571<m:linebreak></m:linebreak>Risc atribuïble.Abstract
Classification of exposure into two levels--one consisting exclusively of unexposed individuals and the other consisting of exposed and perhaps unexposed ones--yields an unbiased estimate of attributable risk when misclassification is nondifferential. The authors advocate, therefore, the use of a broad definition of exposure when estimating attributable risk. Based on this idea, they justify a simple and robust method for estimating the overall attributable risk from several exposures that is based on a division of subjects into two groups, a baseline consisting of those unexposed to all exposures and everyone else.