The effect of using different reference dates for control exposure measurement on relative risk estimates in a case-control study

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dc.contributor.author Rampey, Alvin H.
dc.contributor.author Irwin, Kathleen L.
dc.contributor.author Oberle, Mark W.
dc.contributor.author Kinchen, Steven
dc.contributor.author Lee, Nancy C.
dc.contributor.author Marsden, Anne
dc.contributor.author Rosero-Bixby, Luis
dc.date.accessioned 2016-07-06T21:04:33Z
dc.date.available 2016-07-06T21:04:33Z
dc.date.issued 1993
dc.identifier.issn 0895-4356
dc.identifier.uri http://biblioteca.ccp.ucr.ac.cr/handle/123456789/1002
dc.description.abstract In case-control studies in which case and control enrollment periods are not identical, exposure status for time-dependent variables is often measured relative to a reference date. Using data from a case-control study of the relation between cervical cancer and oral contraceptive (OC) use in which control enrollment began 6 months after the end of case enrollment, we evaluated the effect on odds ratios from using five different reference dates to determine the controls’ exposure status. The choice of reference date had little effect on the odds ratios in this study. Reference dates for time-dependent exposure variables should be considered carefully in studies when case and control enrollment periods are not identical. es
dc.language.iso en es
dc.publisher Elsevier es
dc.rights Atribución-NoComercial-CompartirIgual 3.0 Costa Rica *
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/3.0/cr/ *
dc.subject Estudios de casos es_ES
dc.subject Recopilación de datos es
dc.subject Probabilidad es
dc.subject Cáncer es
dc.subject Anticonceptivos orales es
dc.title The effect of using different reference dates for control exposure measurement on relative risk estimates in a case-control study es
dc.title.alternative Journal of Clinical Epidemiology. 46(5). es
dc.type Article es


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