The purpose of double blinding in clinical trails is to-
Correct Answer: Avoid observer and subject bias
Description: There may be bias in randomized control trials. Randomization cannot guard against these so of bias, nor the size of the sample. In order to reduce these problems, a technique known as blinding is adopted. Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 91
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Social & Preventive Medicine
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