prentice


The file consists of survival times  in days of 137 lung cancer patients
from a Veteran's Administration Lung Cancer trial, together with
explanatory variables: performance status, a measure of
general medical status on a continuous scale 1--9.9, with 1--3
completely hospitalized, 4--6 partial confinement to hospital, 7--9.9
able to care for self; age in years; time in months from
diagnosis to starting on the study; a factor prior therapy
 (1 no, 2 yes); a factor treatment  (1 standard,
2 test) and a factor tumour type (1 squamous, 2 small, 3
adeno, 4 large).  There are three censored observations.


datasets

This package accompanies Aitkin et al, Statistical
Modelling in R, OUP, 2009. The package contains some functions
and datasets used in the text.

Ross Darnell

SMIR

Companion to Statistical Modelling in R

prentice function

A data.frame of 137 obs. of 8 variables:
  <table><tr><td>
    [,1] </td>
<td>  treat </td>
</tr><tr><td>  integer, 1= standard, 2= test</td>
<td>
 [,2] </td>
</tr><tr><td>  type  </td>
<td>  integer,  1= squamous, 2 =small, 3= adeno, 4= large</td>
</tr><tr><td>
 [,3] </td>
<td>  time  </td>
</tr><tr><td>  integer,  survival time in days </td>
<td>
 [,4] </td>
</tr><tr><td>  censor</td>
<td>  integer,  censoring indicator </td>
</tr><tr><td>
 [,5] </td>
<td>  status</td>
</tr><tr><td>  integer,  general medical status on a scale 1--9.9 </td>
<td>
 [,6] </td>
</tr><tr><td>  mfd   </td>
<td>  integer,  time in months from diagnosis </td>
</tr><tr><td>
 [,7] </td>
<td>  age   </td>
</tr><tr><td>  integer,  age in years </td>
<td>
    [,1] </td>
</tr></table>

Format

Prentice, R. L. (1973), "Exponential survivals with censoring
  and explanatory variables", <em>Biometrika</em>, <b>60</b>, 279--88.

prentice: Veteran's Administration Lung Cancer Trial

Description

Usage

Arguments

Format

Source

[,1]	treat
integer, 1= standard, 2= test	[,2]
type	integer, 1= squamous, 2 =small, 3= adeno, 4= large
[,3]	time
integer, survival time in days	[,4]
censor	integer, censoring indicator
[,5]	status
integer, general medical status on a scale 1--9.9	[,6]
mfd	integer, time in months from diagnosis
[,7]	age
integer, age in years	[,1]