Listar Medicina, ciencias biomédicas y salud pública por autor "Rampey, Alvin H."
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The effect of using different reference dates for control exposure measurement on relative risk estimates in a case-control study
Rampey, Alvin H.; Irwin, Kathleen L.; Oberle, Mark W.; Kinchen, Steven; Lee, Nancy C.; Marsden, Anne; Rosero Bixby, Luis (1993-05)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 ...