Bias, randomization & controls

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Test out: Bias, randomization & controls

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1. What is confounding?

A third factor related to both exposure and outcome that can distort an associationRandomizationA confidence intervalA product label

2. Why can blinding matter?

It can reduce expectation and assessment-related biasIt guarantees perfect randomizationIt makes samples largerIt prevents all dropouts

3. An active comparator and placebo comparator ask:

Different questionsExactly the same questionNo causal questionOnly safety questions

Educational information only. Not medical advice.