I would like to do some power estimations for a log-rank two sample test
and cpower seems to fit the bill. I am getting confused though by the
man page and what the arguments actually mean. I am also not sure
whether cpower takes into account censoring or not.
Could anyone provide a simple example of how I would get the power for a
set control/non-control clinical trial where censoring occurs at an
estimated rate with an estimated drop out rate.
Quite confused about this.
--
**************************************************************
Daniel Brewer, Ph.D.
Institute of Cancer Research
Molecular Carcinogenesis
Email: [EMAIL PROTECTED]
**************************************************************
The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company
Limited by Guarantee, Registered in England under Company No. 534147 with its
Registered Office at 123 Old Brompton Road, London SW7 3RP.
This e-mail message is confidential and for use by the a...{{dropped:2}}
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
