Xing Yuan wrote:
> Dear List,
>
> Does anybody no how to compare mean survival times for two (more) groups in
> R? What test statistics should I use?
You should be careful considering the mean survival time, because censoring in
survival data often makes the mean less informative. The median survival time
is what is generally recommended for testing (i.e. in survdiff) and the
statistical test of the median survival times following the methods in
Harrington and Fleming (1982) Biometrika v.69 pp553-566.
Corey
Corey S. Sparks, Ph.D.
Assistant Professor
Department of Demography and Organization Studies
University of Texas San Antonio
One UTSA Circle
San Antonio, TX 78249
email:[EMAIL PROTECTED]
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