%0 Journal Article %T Dise£¿os de investigaci¨®n en epidemiolog¨ªa gen¨¦tica %A Flores-Alfaro %A Eugenia %A Burguete-Garc¨ªa %A Ana I. %A Salazar-Mart¨ªnez %A Eduardo %J Revista Panamericana de Salud P¨²blica %D 2012 %I Organizaci¨®n Panamericana de la Salud %R 10.1590/S1020-49892012000100013 %X this article describes the features of the epidemiologic research designs most commonly used in genetic association studies. case-control studies are efficient in evaluating associations between candidate genes and disease. cohort studies, in contrast, yield a greater degree of causality but are not efficient for the initial exploration to identify gene-disease associations. cross-sectional studies are less expensive, require less time, and are useful for estimating the prevalence of diseases, risk factors, and genetic variants. family-based studies have been successful in finding alleles that confer greater risk for developing mendelian inheritance disorders. %K genetic research %K epidemiologic research design %K genetic association studies %K relative risk (public health). %U http://www.scielosp.org/scielo.php?script=sci_abstract&pid=S1020-49892012000100013&lng=en&nrm=iso&tlng=en