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-
Case-control studies basically comparison study. Cases and control must be comparable with respect to known "confounding factor "such as age , sex occupation, social status, etc. The questions asked relate to personal characteristics and antecedent exposures which may be responsible for the condition studied.
Cause and effect relationship established
Disease median can be calculated
Caffeine is associated with occurrence of disease
Controls will not get the disease
Epidemiology