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Social & Preventive Medicine General 47b13b01

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
High-Yield Explanation
No explanation provided.
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