kiterunner
Forum Junior
Topics: 14
Posts: 65
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Given that a person has lived for 2 years, while calculating the survival probability for at least 4 years, should we include the probability of 1st and 2nd year or should we just calculate it w/ the probability for last 2 years?
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| sfk
Forum Elite
Topics: 43
Posts: 294
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the answer is c.
since the person survived initial 2 yrs, those 2 probabilities are not counted. so its just .84 & .85
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