Hi
r-help-boun...@r-project.org napsal dne 10.03.2009 12:21:38:
>
> Hi there,
>
> I am beginner in R and I have some basic question. Suppose I run a
common
> procedure such as a t test or cox model like below:
>
> out<-coxph( Surv(tstart,tstop, death1) ~ x1+x1:log(tstop+1) ,
test1,method=c
> ("breslow"))
>
> Which yields the following result:
>
> Call:
> coxph(formula = Surv(tstart, tstop, death1) ~ x1 + x1:log(tstop +
> 1), data = test1, method = c("breslow"))
>
> coef exp(coef) se(coef) z p
> x1 -9.58 6.89e-05 6.83 -1.40 0.16
> x1:log(tstop + 1) 6.90 9.93e+02 5.63 1.23 0.22
> Likelihood ratio test=2.97 on 2 df, p=0.226 n= 120
>
>
> Now I simply want to create an array (let "a") with the coefficients.
I.e. I want
Most probably coef will work here
If you had tried help.search
??"coefficients"
you would find several appropriate items.
Besides
str(object) is also a good starting point for inspection of any object.
Regards
Petr
>
> a<-c(-9.58, 6.90)
>
> Generally how can take the elements I want from the output matrix above
for
> further manipulation?
>
> Thanks in advance for any answer!!
>
>
>
>
>
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