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For the each of the following sets of ORs or RRs for a disease & exposure association stratified by stratum 1 and 2, describe whether
For the each of the following sets of ORs or RRs for a disease & exposure association stratified by stratum 1 and 2, describe whether or not there is confounding and/ or effect modification and which measure of the OR or RR you should report. (Points shown are for assignment; no points for Practice Problems). Stratum 1 Stratum 2 Crude OR Finding (3 pts each) Present (1.5 pt each) OR or RR |OR or RR |or RR B.1 1.0 1.0 1.0 B. 1a B. 1b B.2 1.0 12.0 4.0 B.2a B.2b B.3 1.82 1.84 1.4 B.3a B.3bB. 1a., B.2a, B.3a, B6 & B7 A. effect modification, and confounding B. effect modification, but not confounding effect modification, confounding irrelevant no effect modification, but confounding no effect modification, no confounding effect modification irrelevant, confounding B. 1b., B.2b, B.3b A. Crude B. Stratified C. Adjusted
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