[R] interpreting Weibull survival regression

From: <sms13+_at_pitt.edu>
Date: Sat 25 Jun 2005 - 01:27:28 EST

I was wondering if someone can help me
interpret the results of running

I run the following and get the
following R output.
> weibreg(Surv(time, censor)~covar)

fit$fail = 0
weibreg(formula = Surv(time,

Covariate           Mean       Coef 
Rel.Risk      L-R p   Wald p
covar     319.880    -0.002     0.998 

log(scale)          0.000     8.239 
3786.326               0.000
log(shape)          0.000     0.265 
1.304               0.000

Events                    172
Total time at risk        845891
Max. log. likelihood      -1609.4
LR test statistic         34.4
Degrees of freedom        3
Overall p-value           1.65026e-07

I would just like to find the estimated mean survival time as a function of the covariate in the model, but am not sure how to use this output to find that.
Any help would be greatly appreciated.

Thank you,

R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat Jun 25 01:26:50 2005

This archive was generated by hypermail 2.1.8 : Fri 03 Mar 2006 - 03:33:02 EST