Re: st: Help with stci (upper bound not provided)

[Ronan Conroy <rconroy@rcsi.ie>]

It strikes me that if no more than 55% of data have observed  
failures, no percentiles beyond this can be calculated from the data.

Any such calculation implies that the remaining observations are  
going to fail to some pattern which is known to Stata.



On 23 Jul 2007, at 07:30, Guillermo Villa wrote:


> Dear statalisters,
>
> After performing stci command, I can get an estimate of the survival
> time median, its standard error, and the lower bound of the confidence
> interval. No estimate of the upper bound of the interval is however
> provided. I cannot either obtain punctual estimates above the 55th
> centile.
>
> Could you please help me? No warning is displayed by Stata.


P    Before printing, think about the environment
=================================
Ronan Conroy
rconroy@rcsi.ie
Royal College of Surgeons in Ireland
120 St Stephen's Green, Dublin 2, Ireland
+353 (0)1 402 2431
+353 (0)87 799 97 95





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