[R] cpower and censoring

From: Daniel Brewer <daniel.brewer_at_icr.ac.uk>
Date: Thu, 08 May 2008 10:36:11 +0100

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: daniel.brewer_at_icr.ac.uk
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Received on Thu 08 May 2008 - 09:40:56 GMT

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