Hi, I'm reading van Belle et al "Biostatistics" and trying to run a cox test using a dataset from:
http://faculty.washington.edu/~heagerty/Books/Biostatistics/chapter16.html (Primary Biliary Cirrhosis data link at top of the page), I'm using the following code: --------------- start of code library(survival) liver <- scan("liver2.txt",list(age=0,albumin=0,alkphos=0,ascites=0,bili=0, cholest=0,edema=0,edmadj=0,hepmeg=0,obstime=0,platelet=0,protime=0, sex=0,sgot=0,spiders=0,stage=0,status=0,treatmnt=0, triglyc=0,urinecu=0)) fit<-coxph(Surv(obstime,status)~bili+edmadj+albumin+protime+age,data=liver) summary(fit) ----------------- End of code but the answer is rather different from that in the book (p.688 - for anyone with the book). The book refers to EDTRT, but the dataset has EDMADJ and EDMEMA, also the book talks about 312 patients and the dataset has 418 lines. Has anybody else used this dataset? Cheers, Geoff Russell ______________________________________________ [email protected] 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.
