Re: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1

2012-11-27 Thread pascal . girard
@globomaxnm.com Subject: RE: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1 Pascal: There is one more consideration. If your model depends on the use of covariate data, then during the numerical integration from time t1 to t2, where t1 and t2 are times of two

Re: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1

2012-11-27 Thread Leonid Gibiansky
regards, Pascal From: Leonid Gibiansky lgibian...@quantpharm.com To: pascal.gir...@merckgroup.com Cc: nmusers@globomaxnm.com nmusers@globomaxnm.com Date: 26/11/2012 21:40 Subject: Re: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1

RE: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1

2012-11-26 Thread Herbert Struemper
: Sunday, November 25, 2012 9:11 PM To: Leonid Gibiansky; pascal.gir...@merckgroup.com Cc: nmusers@globomaxnm.com Subject: RE: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1 Pascal: There is one more consideration. If your model depends on the use of covariate

RE: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1

2012-11-26 Thread pascal . girard
Struemper herbert.x.struem...@gsk.com To: nmusers@globomaxnm.com nmusers@globomaxnm.com Date: 26/11/2012 16:13 Subject:RE: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1 Sent by:owner-nmus...@globomaxnm.com Pascal, I had the same issue

Re: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1

2012-11-26 Thread Leonid Gibiansky
, It's a kind og magic! :-) From: Herbert Struemper herbert.x.struem...@gsk.com To: nmusers@globomaxnm.com nmusers@globomaxnm.com Date: 26/11/2012 16:13 Subject: RE: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1 Sent by: owner-nmus...@globomaxnm.com

RE: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1

2012-11-25 Thread Bauer, Robert
] Different EBE estimation between original and enriched dataset with MDV=1 Hi Pascal, In addition to Leonid's answer, if you have time-varying covariates and aren't explicitly computing the current value in the $DES block and are interpolating them (with something other than LOCF), that could

RE: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1

2012-11-25 Thread Bauer, Robert
[mailto:owner-nmus...@globomaxnm.com] On Behalf Of Leonid Gibiansky Sent: Friday, November 23, 2012 12:15 PM To: pascal.gir...@merckgroup.com Cc: nmusers@globomaxnm.com Subject: Re: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1 Hi Pascal, I think the problem

RE: [NMusers] Different EBE estimation between original and enriched dataset with MDV=1

2012-11-23 Thread Joachim Grevel
Dear Pascal, What you observed is related to “speed” of estimation. With a larger dataset (many dummies) you slow down the estimation. Roughly similar to using the SLOW command in $EST. With an estimation that has difficulties to converge you see a difference in EBEs and other parameters. We