I know I'm asking for something very specific (perhaps too much!) but
does anybody know about :
A) a Stata routine (or software or tables) calculating sample size to
compare more than two survival curves?
B) a Stata routine (or software or tables) calculating sample size to
compare two survival curves by Wilcoxon (Breslow-gehan) test ?
C) a Stata routine (or software or tables) calculating sample size to
compare two survival curves by the trend test test ?
Thank you very much for any advice you can give me.
Brunelli Cinzia
Dott.ssa Brunelli Cinzia
Statistician
Division of Psychology
National Cancer Institute
Via Venezian 1
20133 Milano
ITALY
Tel. ..39-02-6702710
Fax ..39-02-70600462
Email: [email protected]