R help - Oct 2004 - How to obtain confidence intervals from a coxph object?

Hi!

I am performing an analysis which looks like this:

cox.out <- coxph(Survobject ~ x1 + x2 + x3)
summary(cox.out)

This works fine, but I have not been able to extract any of the output  
 from "summary(cox.out)", for instance like:

summary(cox.out)$coef  or
summary(cox.out)$lower

So my question is if there is any way to extract the information given in  
summary(cox.out)?

Thanks in advance!


Best regards,
Vegard Andersen
Institute of Community Medicine
University of Tromso
Tromso, Norway


--

On Fri, 29 Oct 2004, Vegard Andersen wrote:
> I am performing an analysis which looks like this:
> 
> cox.out <- coxph(Survobject ~ x1 + x2 + x3)
> summary(cox.out)
> 
> This works fine, but I have not been able to extract any of the output  
>  from "summary(cox.out)", for instance like:
> 
> summary(cox.out)$coef  or
> summary(cox.out)$lower
> 
> So my question is if there is any way to extract the information given in  
> summary(cox.out)?
Yes, provided you have updated to survival_2.15 (out this week).


-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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Oxford OX1 3TG, UK                Fax:  +44 1865 272595