[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: sample size estimation for cox model

From	moleps islon <[email protected]>
To	[email protected]
Subject	st: sample size estimation for cox model
Date	Tue, 15 Sep 2009 22:04:24 +0200

Dear listers,
How do I determine standard deviation (sd) for survival data in a cox model?

Is it correct to just use y=sqrt of e(V) and plug it into

stpower cox, hratio(x) sd(y) ??

regards,

M
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/

Follow-Ups:
- st: RE: sample size estimation for cox model
  - From: "Kieran McCaul" <[email protected]>

Prev by Date: RE: st: Different Results for the same estimation
Next by Date: Re: st: Different Results for the same estimation
Previous by thread: st: Different Results for the same estimation
Next by thread: st: RE: sample size estimation for cox model
Index(es):
- Date
- Thread