EPID 301 Lecture Notes - Lecture 8: Caffeine, Confidence Interval, Dependent And Independent Variables
7 Jul 2018
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Epid 301 lecture 8: stratiied analysis to distinguish em from confounding. After stratiication, if there is efect modiication, the stratum speciic (adjusted) estimates will be diferent from each another. Tests for efect modiication involve the inclusion of interaction terms in statistical models. If there is confounding, the stratum-speciic (adjusted) estimates will be similar to each another, but diferent from the unadjusted (unstratiied, or crude) estimate. The mantel-haenszel procedure provides a weighted average of the stratum-speciic estimate which is compared to the crude estimate to determine if indeed the suspected confounder contributes to a mixing of efects.
