This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
Odds ratio is related to? 
Select and explain. 
A. Relative risk, B. Incidence, C. Prevalance, D. Attributable risk
A: Relative risk
Answer: A: Relative risk 
Explanation: .<p>odd&;s ratio is a measure of the strength of the association between risk factor and outcome.it is closely related to relative risk.odd&;s ratio is being investigated based on three assumptions mainly ,the disease being investigated must be rare,the cases must be represntative of those with disease and the controls must be representatives of those without disease.</p><p>ref;park&;s textbook of preventive and social medicine,22 nd edition,pg no 70</p>