[R] survfit for interval censored data

[Cody Hamilton]

Sandra,

As far as I am aware, you will have to use a parametric model (survreg) if your survival times are interval-censored.

Regards,
   -Cody

Cody Hamilton
Edwards Lifesciences

-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Sandra Ellis
Sent: Wednesday, July 11, 2007 7:11 AM
To: r-help at stat.math.ethz.ch
Subject: [R] survfit for interval censored data

<p>Hello,</p><p>I am a new R-user and would like to use survfit for interval censored data.
Whenever I try I get an error message that states I can only use survfit for right censored or
counting process data.  I was wondering if anyone knows if there is an additional package available
that can calculate KM curves for interval censored data, or another program with this
capability?</p><p>Thank you.</p><p>S. Ellis (student)</p>

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