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
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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