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Review Question - QID 220351

Bias QID: 220351 (M2.OMB.1)
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QID 220351 (Type "220351" in App Search)
A researcher is studying the risk factors that are associated with the development of esophageal cancer. She hypothesizes that smoking is a strong risk factor for the development of this disease. She designs a retrospective cohort study where 500 patients who are smokers were compared with 500 patients who are not smokers. She finds that smoking is signif...
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