Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

RE: st: How do I estimate adjusted median survival times and confidence i ntervals?


From   "Paris, Robert M MAJ USAMC-AFRIMS" <Robert.Paris@amedd.army.mil>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: How do I estimate adjusted median survival times and confidence i ntervals?
Date   Mon, 3 Feb 2003 08:44:23 +0700

I apologize. With STS graph, I used the adjustfor option to create the K-M
plots, to adjust for a covariate, age in this case. When I use stsum to get
the estimate for median survival, the estimate is not adjusted for age.
Visually comparing it to the graph, you can see the difference. I can get
the estimate from the graph, but was wondering if there was a better way to
do this.

Rob

Robert Paris, MD, MPH
Assistant Chief, Dept. of Retrovirology
USAMC-AFRIMS

Tel: (011) 66 2 644 6692 ext. 3415
Fax:               644 4824
e-mail: parisrm2@thai.amedd.army.mil

Thai Address:
315/6 Rajvithi Road
Bangkok 10400 Thailand

US Address: (domestic rates)
USAMC-AFRIMS
APO AP 96546 USA


-----Original Message-----
From: Ricardo Ovaldia [mailto:ovaldia@yahoo.com]
Sent: Friday, January 31, 2003 8:39 PM
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: How do I estimate adjusted median survival times and
confidence i ntervals?


--- "Paris, Robert M MAJ USAMC-AFRIMS"
<Robert.Paris@amedd.army.mil> wrote:
> Although I can generate an adjusted survival curve
> with sts graph, I am
> unable to generate an "adjusted" median survival
> using stsum or stci. I have
> tried using sts gen to create and adjusted survivor
> function, but don't
> yield similar answers when compared to the survival
> curves. Any thoughts?

What do you mean when you say "adjusted median
survival". Do you mean adjusted for other covariates
or what? Your question is very ambiguous. Please try
to be more specific.

Best,
Ricardo.

=====
Ricardo Ovaldia, MS
Statistician 
Oklahoma City, OK

__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com
*
*   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/
*
*   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