This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Coho study is associated with: March 2010 
Select and explain. 
A. Prevalence, B. Odd's ratio, C. Relative risk, D. Exposure rates
C: Relative risk
Answer: C: Relative risk 
Explanation: Ans. C: Relative riskOdd's ratio can be derived from a case control study, which is a measure of the strength of the association between risk factor and outcome.