Question

A survival analysis problem

In an experiment, 300 mice were observed at birth. An additional 20 mice were first observed at age 2 (days) and 30 more were first observed at age 4.

The events are the following:

There were 6 deaths at age 1 day; 10 deaths at age 3 day; 10 deaths at age 4; a number of deaths at age 5; b at age 9, and 6 deaths at age 12.

In addition, 45 mice were lost to observation at age 7 days, 35 at age 10 days, and 15 at age 13.

The following Product-Limit estimates were obtained: S₃₅₀(7) = 0:892 and S₃₅₀(13) = 0:856. Determine the values of a and b.

Please compute this problem using R. Also please show R-codes in step by step and R output

Thanks,

Answer 1