Re: [R] SEs rms cph vs survey svycoxph

2014-02-26 Thread Thomas Lumley
anesthetictransfusionunits 0.1964 0.0214 9.17 0.0001 From: Thomas Lumley tlum...@uw.edu Date: Tuesday, February 25, 2014 at 3:09 PM To: Nathan Leon Pace, MD, MStat n.l.p...@utah.edu Cc: r help list r-help@r-project.org Subject: Re: [R] SEs rms cph vs survey svycoxph On Tue, Feb

[R] SEs rms cph vs survey svycoxph

2014-02-25 Thread Nathan Pace
I¹ve used twang to get ATE propensity scores. I¹ve done multivariable, case weighted Cox PH models in survey using svycoxph and in rms using cph with id(cluster) set to get robust estimates. The model language is identical. The point estimates are identical, but the CIs are considerably wider

Re: [R] SEs rms cph vs survey svycoxph

2014-02-25 Thread Thomas Lumley
On Tue, Feb 25, 2014 at 2:51 PM, Nathan Pace n.l.p...@utah.edu wrote: I¹ve used twang to get ATE propensity scores. I¹ve done multivariable, case weighted Cox PH models in survey using svycoxph and in rms using cph with id(cluster) set to get robust estimates. The model language is

Re: [R] SEs rms cph vs survey svycoxph

2014-02-25 Thread Nathan Pace
help list r-help@r-project.org Subject: Re: [R] SEs rms cph vs survey svycoxph On Tue, Feb 25, 2014 at 2:51 PM, Nathan Pace n.l.p...@utah.edu wrote: I¹ve used twang to get ATE propensity scores. I¹ve done multivariable, case weighted Cox PH models in survey using svycoxph and in rms using cph