This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Definition and Concepts, Examples from NHPs, Subject name: Social & Preventive Medicine
Kaplan Meier method is used for estimating :- 
Select and explain. 
A. Incidence, B. Frequency, C. Prevalence, D. Survival
D: Survival
Answer: D: Survival 
Explanation: Kaplan Meier Survival Curve is used to estimate survival. -The area under the curve gives cumulative survival.