Re: [R] Problem comparing hazard ratios

2010-03-31 Thread Frank E Harrell Jr
{bootstrap ranks;ranking;nonstandard bootstrap inference;rank inference;slow convergence rate;smooth ranks in the presence of near ties;rank inference for fixed effects risk adjustment models} } -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-proj

Re: [R] Problem comparing hazard ratios

2010-03-31 Thread Frank E Harrell Jr
-boun...@r-project.org] On Behalf Of Frank E Harrell Jr Sent: Tuesday, March 30, 2010 3:57 PM To: Michal Figurski Cc: r-help@r-project.org Subject: Re: [R] Problem comparing hazard ratios Michal Figurski wrote: Dear R-Helpers, I am a novice in survival analysis. I have the following code: for (i in 3

Re: [R] Problem comparing hazard ratios

2010-03-31 Thread Ravi Varadhan
-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Frank E Harrell Jr Sent: Tuesday, March 30, 2010 3:57 PM To: Michal Figurski Cc: r-help@r-project.org Subject: Re: [R] Problem comparing hazard ratios Michal Figurski wrote: > Dear R-Helpers, > > I am a novice in survival analysis. I

Re: [R] Problem comparing hazard ratios

2010-03-31 Thread Michal Figurski
Thank you, gentlemen. I greatly appreciate your help. -- Michal J. Figurski, PhD HUP, Pathology & Laboratory Medicine Biomarker Research Laboratory 3400 Spruce St. 7 Maloney Philadelphia, PA 19104 tel. (215) 662-3413 __ R-help@r-project.org mailing li

Re: [R] Problem comparing hazard ratios

2010-03-30 Thread David Winsemius
On Mar 30, 2010, at 3:45 PM, Michal Figurski wrote: Dear R-Helpers, I am a novice in survival analysis. I have the following code: for (i in 3:12) print(coxph(Surv(time, status)~a[,i], data=a)) I used it to fit the Cox Proportional Hazard models separately for every available parameter (col

Re: [R] Problem comparing hazard ratios

2010-03-30 Thread Frank E Harrell Jr
Michal Figurski wrote: Dear R-Helpers, I am a novice in survival analysis. I have the following code: for (i in 3:12) print(coxph(Surv(time, status)~a[,i], data=a)) I used it to fit the Cox Proportional Hazard models separately for every available parameter (columns 3:12) in my data set - with

[R] Problem comparing hazard ratios

2010-03-30 Thread Michal Figurski
Dear R-Helpers, I am a novice in survival analysis. I have the following code: for (i in 3:12) print(coxph(Surv(time, status)~a[,i], data=a)) I used it to fit the Cox Proportional Hazard models separately for every available parameter (columns 3:12) in my data set - with intention to compare t