--- moleps islon <[email protected]> wrote:
> I need to make a survival graph for different strata. Do i need to
> specify the strata as a stcox option or is it sufficient to use
> stcurve with the -at() option?? What is the difference?
First of all, have you tried this? If you did, you would have seen the
difference. The way to build an analysis or a graph is to start, make
errors, correct them, make new errors, correct those, etc. etc. Don't
be afraid to try out commands and see what happens.
The -stcox- -stcurv- combination seems to me way too complicated if all
you want to do is create a survival graph. Is this what you are looking
for:
sysuse cancer
stset studytim, failure(died)
sts graph, by(drug)
Also, this book is going to be a good investment if you are going to do
a lot of survival analysis:
http://www.stata-press.com/books/saus.html
Hope this helps,
Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room N515
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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