This is how you go about doing this. summary(results)$coefficients[1,5]
You will have to check this for you code. But the idea is that summary(results) is a list (?) and one of its components is called "coefficients", which is a matrix. So the problem is just to extract one element of this matrix. I am not well versed with coxph so there may be some minor details I am missing, but that is the general idea (same as with lm, glm etc.). Ritwik. On 9/30/06, Boks, M.P.M. <[EMAIL PROTECTED]> wrote: > > > Dear R users, > > > > I am calculating several cox proportional hazard models after each other (I > know this is unusual, but I am just exploring the data). For the purpose of > multiple testing correction I need to construct an array of these p-values. > However since the output is not an array in itself, I cannot find a way to > obtain the p-value only. > > > > > attach(tms) > > > > > > goal<-rep(0.7*FREQUENC[1:13],6) > > > event<- Surv(TIJD,FREQUENC<goal) > > > results<-coxph(event~ TYPETREA) > > > summary(results) > > > > Call: > > coxph(formula = event ~ TYPETREA) > > > > n=76 (2 observations deleted due to missing) > > coef exp(coef) se(coef) z p > > TYPETREAnon-guided -0.826 0.438 0.484 -1.71 0.088 > > > > exp(coef) exp(-coef) lower .95 upper .95 > > TYPETREAnon-guided 0.438 2.28 0.169 1.13 > > > > Rsquare= 0.041 (max possible= 0.829 ) > > Likelihood ratio test= 3.2 on 1 df, p=0.0737 > > Wald test = 2.91 on 1 df, p=0.088 > > Score (logrank) test = 3.08 on 1 df, p=0.0794 > > > > Does anyone now how to extract the p-value? > > Many thanks!, > > Marco > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Ritwik Sinha Graduate Student Epidemiology and Biostatistics Case Western Reserve University [EMAIL PROTECTED] | +12163682366 | http://darwin.cwru.edu/~rsinha ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
