In a case controlled study. It is found that the disease is more common in the group taking coffee as compared to the control group. The significance of this is -: (A) Cause and effect relationship established, (B) Disease median can be calculated, (C) Caffeine is associated with occurrence of disease, (D) Controls will not get the disease
Answer is C. Ans. is 'c' i.e., Caffeine is associated with occurrence of disease Case-control study does not establish the cause and effect relationship because it can not distinguish between cause and associated factors. o Case-control study can only tell the association between cause and effect.