Re: [R] Cox regression and p-values

2007-09-19 Thread Terry Therneau
Fisher's "exact" test is for comparing two proportions, which is a completely different problem than Cox regression, and so the test has no relevance to this problem. It has, however, sparked a large literature of debate; already alluded to by many of the responses. The tests in the coxph

Re: [R] Cox regression and p-values

2007-09-18 Thread Peter Dalgaard
Duncan Murdoch wrote: > On 9/18/2007 12:41 PM, Daniel Brewer wrote: > >> Hello, >> I might be barking up the wrong tree here, but I want to make sure I >> have a full understanding of this. What I would like to know is what >> tests are performed to give the p-values for each variable in the ta

Re: [R] Cox regression and p-values

2007-09-18 Thread Marc Schwartz
TED] [mailto:[EMAIL PROTECTED] On Behalf Of Daniel Brewer > Sent: Tuesday, September 18, 2007 9:42 AM > To: [EMAIL PROTECTED] > Subject: [R] Cox regression and p-values > > Hello, > I might be barking up the wrong tree here, but I want to make sure I > have a full understanding o

Re: [R] Cox regression and p-values

2007-09-18 Thread Cody Hamilton
42:198-202. Regards, -Cody Cody Hamilton Edwards Lifesciences -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Daniel Brewer Sent: Tuesday, September 18, 2007 9:42 AM To: [EMAIL PROTECTED] Subject: [R] Cox regression and p-values Hello, I might be barki

Re: [R] Cox regression and p-values

2007-09-18 Thread Duncan Murdoch
On 9/18/2007 12:41 PM, Daniel Brewer wrote: > Hello, > I might be barking up the wrong tree here, but I want to make sure I > have a full understanding of this. What I would like to know is what > tests are performed to give the p-values for each variable in the table > that is the result of coxph

[R] Cox regression and p-values

2007-09-18 Thread Daniel Brewer
Hello, I might be barking up the wrong tree here, but I want to make sure I have a full understanding of this. What I would like to know is what tests are performed to give the p-values for each variable in the table that is the result of coxph regression when the variables are categorical only.