order of covariate inclusion

From: Peter Bonate Date: September 25, 2003 technical Source: cognigencorp.com
From: pbonate@ilexonc.com Subject: [NMusers] order of covariate inclusion Date: 9/25/2003 12:06 PM Is anyone aware of any studies showing whether the order of covariate inclusion has any impact on the final model using a forward addition model development strategy? For example, suppose you have weight, sex, and age as covariates and then test weight, then age, and then sex in the model using the likelihood ratio test. Does this or can this result in a different model than if you tested sex then age then weight? Thanks, pete bonate Peter L. Bonate, PhD, FCP Director, Pharmacokinetics ILEX Oncology, Inc 4545 Horizon Hill Blvd San Antonio, TX 78229 phone: 210-949-8662 fax: 210-949-8219 email: pbonate@ilexonc.com

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Sep 25, 2003 Peter Bonate order of covariate inclusion
Sep 25, 2003 Leonid Gibiansky Re: order of covariate inclusion
Sep 25, 2003 Peter Bonate Re: order of covariate inclusion
Sep 25, 2003 Leonid Gibiansky Re: order of covariate inclusion
Sep 25, 2003 Harry Mager Hm Re: order of covariate inclusion
Sep 25, 2003 William Bachman RE: Re: order of covariate inclusion
Sep 25, 2003 Leonid Gibiansky RE: Re: order of covariate inclusion
Sep 25, 2003 Peter Bonate RE: Re: order of covariate inclusion
Sep 25, 2003 Kenneth Kowalski RE: order of covariate inclusion
Sep 25, 2003 Alan Xiao RE: Re: order of covariate inclusion
Sep 25, 2003 Leonid Gibiansky Re: order of covariate inclusion
Sep 25, 2003 Kenneth Kowalski RE: order of covariate inclusion
Sep 25, 2003 Sduffull RE: order of covariate inclusion
Sep 25, 2003 Marc Gastonguay RE: order of covariate inclusion -> avoiding stepwise approaches
Sep 26, 2003 Gary Maier RE: order of covariate inclusion -> avoiding stepwise approaches
Sep 26, 2003 Marc Gastonguay RE: order of covariate inclusion -> avoiding stepwise approaches
Sep 26, 2003 William Bachman RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 26, 2003 Jakob Ribbing RE: order of covariate inclusion -> avoiding stepwise approaches
Sep 26, 2003 Mark Sale RE: order of covariate inclusion -> avoiding stepwise approaches
Sep 26, 2003 Chuanpu 2 Hu RE: order of covariate inclusion -> avoiding stepwise a pproaches -> abandoning exploratory analysis?
Sep 26, 2003 Kenneth Kowalski RE: order of covariate inclusion -> avoiding stepwise approaches
Sep 26, 2003 Kenneth Kowalski RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 26, 2003 William Bachman RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 26, 2003 Marc Gastonguay RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 26, 2003 Kenneth Kowalski RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 26, 2003 William Bachman RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 26, 2003 Mark Sale RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 26, 2003 Marc Gastonguay RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 26, 2003 David Garbutt RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 26, 2003 Leonid Gibiansky RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 26, 2003 Mark Sale RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 26, 2003 Marc Gastonguay RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 26, 2003 Sduffull RE: order of covariate inclusion -> avoiding stepwise a pproaches -> abandoning exploratory analysis?
Sep 27, 2003 Marc Gastonguay RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 29, 2003 Mark Sale RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 29, 2003 Harry Mager Hm RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 29, 2003 Kenneth Kowalski RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 29, 2003 Tgordi RE: order of covariate inclusion -> avoiding stepwise approaches -> abandoning exploratory analysis?
Sep 29, 2003 Leonid Gibiansky RE: order of covariate inclusion -> avoiding stepwise a pproaches -> abandoning exploratory analysis?
Sep 29, 2003 Guzy RE: order of covariate inclusion -> avoiding stepwise a pproaches -> abandoning exploratory analysis?
Sep 29, 2003 Mark Sale RE: order of covariate inclusion -> avoiding stepwise a pproaches -> abandoning exploratory analysis?
Sep 29, 2003 Kenneth Kowalski RE: order of covariate inclusion -> avoiding stepwise a pproaches -> abandoning exploratory analysis?
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