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Hi,

My data set is currently structured to estimate monthly survival over a period of 32 months. The monthly survival estimate is 0.96 (SE=0.01). I want to calculate an annual survival estimate, which is calculated by multiplying the survival estimate by 12 months. This yields an estimate of 0.59; however, I'm interested in calculating the standard error, lower and upper confidence limits on this estimate. What is the best approach to derive these values?

Thanks!

alittle wrote:Hi,

My data set is currently structured to estimate monthly survival over a period of 32 months. The monthly survival estimate is 0.96 (SE=0.01). I want to calculate an annual survival estimate, which is calculated by multiplying the survival estimate by 12 months. This yields an estimate of 0.59; however, I'm interested in calculating the standard error, lower and upper confidence limits on this estimate. What is the best approach to derive these values?

Thanks!

Delta method - see http://www.phidot.org/software/mark/doc ... /app_2.pdf