Continuing Medical Education Questions: November 2010

A. A form of bias in which randomization of patients in a study is infl uenced by comorbidities. B. A form of bias in which investigators search more vigorously for evidence of primary end points in a subgroup of patients. C. A form of allocation bias in which physicians are more likely to prescribe certain medications to a subgroup of patients. D. A form of bias in which patients are more likely to take their medications if they believe they are receiving active treatment. 3. Which of the following statements regarding the current evidence for combined use of PPI and clopidogrel is correct?