[R] retrieve p-value from a cox.obj

Bernardo Rangel Tura tura at centroin.com.br
Fri Aug 31 13:15:58 CEST 2007

On Wed, 2007-08-29 at 08:40 -0700, clearsky wrote:
> I have a cox.obj named obj, 
> obj <- coxph( Surv(time, status) ~ group, surv.data)
> now I want to retrieve the p-value from obj, so that I can run this hundreds
> of times and plot out the distribution of the p-value. could anyone tell me
> how to get p-value from obj?
> thanks,
Hi Clearsky

try: summary(obj)$waldtest[3]

Bernardo Rangel Tura, M.D,Ph.D
National Institute of Cardiology

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