Vol. 18 - Num. 69
Critical appraisal in small doses
aServicio de Gastroenterología Pediátrica. Hospital Universitario La Paz. Madrid. España.
Correspondence: M Molina. E-mail: firstname.lastname@example.org
Reference of this article: Molina Arias M. Hybrid designs. Rev Pediatr Aten Primaria. 2016;69:89-93.
Published in Internet: 29-03-2016
Cohort studies and case-control studies are the most commonly observational studies used in Epidemiology. There are hybrid designs based on the formers, such us the nested case-control studies and the case and cohort study. Both types have some advantages over the original studies, as is the more efficient management of large samples, especially when the incidence of the disease under study is low.
Keywords● Case and cohort study ● Hybrid designs ● Nested case-control study
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