In case control study of buccal carcinoma:

A. CA is commoner in zarda pan users than non-users

B. Zarda pan is a cause of buccal CA

C. Zarda pan is associated with buccal CA

D. If use of zarda pan is stopped, number of cases will reduce

Correct Answer: Zarda pan is associated with buccal CA

Description: Ans. is 'c' i.e. Zarda pan is associated with buccal Ca. In a case control study, case and effect relationship is not established, we only get to know about associated factors.

Category: Social & Preventive Medicine

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