Which type of bias is minimized by random allocation in clinical trials?
Show answer and explanation
Correct answer: Selection bias
Random allocation ensures that participants have an equal chance of being assigned to any group. This minimizes selection bias and balances confounding variables. It strengthens the internal validity of the study.
Keep practicing
More Evidence-Based Medicine questions
- A meta-analysis differs from a systematic review because it:
- Which statistical measure is most appropriate for time-to-event data in clinical trials?
- External validity refers to:
- Which outcome measure reflects the proportion of patients experiencing an event in a group?
- A p-value less than 0.05 typically indicates that:
- Which of the following is an example of surrogate outcome in pharmacology trials?