rats

<p>Rat treatment data from Mantel et al.
  Three rats were chosen from each of 100 litters, one of which was
  treated with a drug, and then all followed for tumor incidence.</p>

datasets

survival

Contains the core survival analysis routines, including
definition of Surv objects,
Kaplan-Meier and Aalen-Johansen (multi-state) curves, Cox models,
and parametric accelerated failure time models.

Terry Therneau

Survival Analysis

Thomas Lumley

rats function

<p></p><table><tr><td>
    litter:</td>
<td> litter number from 1 to 100</td>
</tr><tr><td>
    rx:</td>
<td> treatment,(1=drug, 0=control) </td>
</tr><tr><td>
    time:</td>
<td> time to tumor or last follow-up</td>
</tr><tr><td>
    status:</td>
<td> event status, 1=tumor and 0=censored</td>
</tr></table>

rats: Rat treatment data from Mantel et al

Description

Usage

Arguments

Format

References

litter:	litter number from 1 to 100
rx:	treatment,(1=drug, 0=control)
time:	time to tumor or last follow-up
status:	event status, 1=tumor and 0=censored