[R] survdiff for Left-truncated and right-censored data

[Thomas Lumley]

On Wed, 23 Nov 2005, Sing-Yee Ling wrote:

> dear all,
>
> I would like to know whether survdiff and survReg function in the
> survival package work for left-truncated and right-censored data.

The survdiff and survfit functions do, as does coxph.  There is no survReg 
in the survival package, but there is survreg, and it does not handle left 
truncation.

 	-thomas

> If not, what other functions can i use to make comparison between two
> survival curves with LTRC data.
>
> thanks for any help given
>
> sing yee
>
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Thomas Lumley			Assoc. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle