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
Answer is C. 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.