d. It eliminates all ethical issues e. It is most eﬃcacious All of the following statements are generally true of prospective cohorts studies EXCEPT: Select one: a. They are useful for studying the effects of rare exposures b. They are an effective way to study diseases with long latency periods c. Selection bias is rarely an issue d. The study groups may consist of exposed and unexposed cohort members e. They provide good measures of incidence
2/25/2018 2018-0108 MPH 6003: Quiz 4 2/4 Q 4 Q 5 Q 6 Q 7 In epidemiologic studies the researcher has control of Select one: a. Participant assignment to treatment b. Participant compliance with treatment c. Participant’s outcomes d. All of the above e. Only a and b Imagine you have the following results from a study, stratified on 2 levels of some characteristic: Stratum 1 OR = 0.333 Stratum 2 OR = 0.335 Crude OR = 0.334 These results are most consistent with the characteristic being Select one: a. Neither a confounder nor an effect modifier b. A Confounder, but not an effect modifier c. An Effect modifier d. None of the above
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- Spring '16