Repeated measures Cox regression ??coxph??
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