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 -
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.
Cause and effect relationship established
Disease median can be calculated
Caffeine is associated with occurrence of disease
Controls will not get the disease