In a controlled trial to compare two treatments, the main purpose of randomization is to ensure that

A. The two groups will be similar in prognostic factors

B. The clinician does not know which treatment the subjects will receive

C. The sample may be referred to a known population

D. The clinician can predict in advance which treatment the subjects will receive

Correct Answer: The two groups will be similar in prognostic factors

Description: None

Category: Social & Preventive Medicine

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