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
[{'content': 'Cohort study estimates all except- \nSelect and explain. \nA. Incidence, B. Relative risk, C. Odds ratio, D. Attributable risk', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Odds ratio Epidemiological studyParameter obtained* Case control studyOdds ratio* Cohort studyIncidence rateRelative riskAttributable riskPopulation attributable risk* Cross - sectional studyPrevalence* Ecological studyGroup characteristics", 'role': 'assistant'}]