12. In a randomized controlled trial (RCT) evaluatinga new drug for hypertension , you notice that participants in the treatment group are more likely to adhere to the medication regimen than those in the control group. This adherence affects the observed blood pressure reduction. What type of bias is this? 13. You are analyzing data from a case-control study investigating the association between mobile phone use and brain tumors. You find that cases (individuals with brain tumors are more likely to recall their past mobile phone use than controls (healthy individuals). What type of bias is

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12. In a randomized controlled trial (RCT) evaluatinga new drug for hypertension , you notice that participants in the treatment group are more likely to adhere to the medication regimen than those in the control group. This adherence affects the observed blood pressure reduction. What type of bias is this? 13. You are analyzing data from a case-control study investigating the association between mobile phone use and brain tumors. You find that cases (individuals with brain tumors are more likely to recall their past mobile phone use than controls (healthy individuals). What type of bias is

Answer 1

12. Performance bias<br /><br />13. Recall bias

Answer 2

12. The bias described is "performance bias," which occurs when there are differences in the care provided to the participants in the treatment and control groups, other than the intervention being studied. In this case, better adherence in the treatment group affects the outcomes.<br /><br />13. The bias described is "recall bias," which occurs when there is a difference in the accuracy or completeness of the recollections retrieved by study participants regarding past events or experiences. Here, individuals with brain tumors are more likely to recall their mobile phone use than healthy individuals.

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