Re: Centering (was Re: Missing covariates)

From: Alan Xiao <Alan.Xiao@cognigencorp.com> Subject: Re: Centering (was Re: Missing covariates) Date: Mon, 09 Jul 2001 08:31:27 -0400 Hi, Mat, Thanks for your reply. For ideal distribution (50% male/50% female), that's a clever choice. However, for most non-ideal situations, e.g., 70% female and 30% male, ..... I'm wondering if anyone has ever used a HYPOTHETICAL MEAN gender (as well as other dichotomous covariates, with a fractional value) before (for the purpose of centering or any other purposes)? Thanks, Alan. -- ***** Alan Xiao, Ph.D *************** ***** PK/PD Scientist *************** ***** Cognigen Corporation ********** ***** Tel: 716-633-3463 ext 265 ******