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365
2013 May 22
0
rmean in survfit
...i have a starting population of say 10,000
> of which say only 2000 are left as of day 365. When I try to print rmean
> it does not print and in any case I am not interested in that. I actually
> want to sum up all the daily survival values starting at 1.0 (S_0) for day
> 1 through 0.2 (S_365) through day 365. I then want to assume "r% retained
> each day" and compute the remaining integral as sum of a geometric series
> through infinity ( (S_365 * r) * 1/(1-r) ) or through a specific future
> time period (730 for example in which case the summation portion 1/ (1-r)
&...