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Section: ArticlesTitle: Empirical evaluation of the influence of control selection schemes on relative risk estimation : the welsh nickel workers study / Alfredo Morabia, Tom Ten Have, J. Richard LandisAuthor: Morabia, A.Notes: Sumario: The objective is to perform an empirical evaluation of the theory that relative incidence rate (RIR) and relative risk (RR) can be directly estimated from case-control studies that have different sampling schemes of controls. The results add empirical support to the theory that the RIR or the RR can be vadidly estimated in case control studiesRelated records: En: Occupational and environmental medicine. - London and Margate. - Vol. 52, nº 7, July 1995 ; p. 489-493Materia / lugar / evento: Medicina laboralEnfermedades profesionalesEnfermedades pulmonaresEpidemiologíaNíquelRefineríasMétodos de evaluaciónOtros autores: Ten Have, Tom Landis, J. Richard Secondary titles: Título: Occupational and environmental medicine Other categories: 873Rights: In Copyright (InC)