[R] simple question beginner

From: Λεωνίδας Μπαντής <bleonidas25_at_yahoo.gr>
Date: Tue, 10 Mar 2009 11:21:38 +0000 (GMT)


 

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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