Message-ID: <4B7D175D-0225-49DE-BC6B-CC0F9130D14A@me.com>
Date: 2013-07-25T19:27:06Z
From: Marc Schwartz
Subject: Repeated measures Cox regression ??coxph??
In-Reply-To: <51F14029020000CB000EB14D@smtp.medicine.umaryland.edu>
On Jul 25, 2013, at 2:11 PM, John Sorkin <jsorkin at grecc.umaryland.edu> wrote:
> Colleagues,
> Is there any R package that will allow one to perform a repeated measures Cox Proportional Hazards regression? I don't think coxph is set up to handle this type of problem, but I would be happy to know that I am not correct.
> I am doing a study of time to hip joint replacement. As each person has two hips, a given person can appear in the dataset twice, once for the left hip and once for the right hip, and I need to account for the correlation of data from a single individual.
> Thank you,
> John
John,
See Terry's 'coxme' package:
http://cran.r-project.org/web/packages/coxme/index.html
You also might find the following of interest:
http://bjo.bmj.com/content/71/9/645.full.pdf
http://www.ncbi.nlm.nih.gov/pubmed/22226885
http://www.ncbi.nlm.nih.gov/pubmed/22078901
Regards,
Marc Schwartz