[R] problem with survexp in survival5

[Thomas Lumley]

On Wed, 5 Apr 2000, Chong Gu wrote:

> 
> Thanks to Robert Gentleman and Professor Ripley for the pointer to
> library(date).  It works now.
> 
> One more question: are R and Splus using the same ratetable?  If not,
> which seems to be the case, which one is more "accurate"?
> 
> When I tried the following in Splus 3.4 for AIX 3.2.5 and Splus 5.1
> for AIX 4.3.1, I got different results.

The Splus3.4 version is definitely different, since the ratetables
were updated with survival5.  I don't know what Splus 5.1
uses. We use the survival5 ratetables, the construction of which is
documented at  
 
	http://www.mayo.edu/hsr/techrpt.html

in technical report #63

	-thomas

Thomas Lumley
Assistant Professor, Biostatistics
University of Washington, Seattle

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