<prompt> Case control study estimatesOnly odds ratioOdds ratio and attributable riskRelative risk, attributable risk, population attributable riskIncidence, Relative risk, and attributable risk  <response>: Case-control studies is basically a comparison study. Cases and control must be comparable with respect to known confounding factors 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. Ref: 25th edition, Parks Textbook of Preventive and Social Medicine, Page no. 79 