KINE 3635 Study Guide - Final Guide: Cohort Study, Confounding, Relative Risk
14 Dec 2016
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The results of a cohort study of alcohol intake and risk of myocardial infarction (mi) are shown below: 20000: calculate the overall crude relative risk, pooling data from males and females. Selection bias is an important issue in epidemiological research. State one possible sources of selection bias that may occur in each of the following designs: prospective cohort study, randomized clinical trials. A clinical trial is designed to test the effect of a certain drug on lowering the cholesterol blood level. N patients with cholesterol are randomized into 2 groups: a group taking drug a and another group taking placebo. At the end of the trial, blood samples from patients in the drug group are analyzed in a laboratory a, and blood samples taken from the placebo group are analyzed in another laboratory b. Results of this trial showed that patients on placebo had a better improvement than patients on drug a.
