Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

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


From   Ronan Conroy <rconroy@rcsi.ie>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Help with stci (upper bound not provided)
Date   Mon, 23 Jul 2007 13:11:44 +0100

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





*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index