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st: Re: simple slope and centering modules available on SSC


From   Jeffrey Simons <jsimons@usd.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: Re: simple slope and centering modules available on SSC
Date   Fri, 27 Aug 2004 08:11:00 -0500

Thanks to kit Baum, two new modules were placed on SSC

 sslope  : module to calculate slope coefficients for regression
interactions. This routine calculates simple slopes for interactions
between continuous variables in regression analysis.  It will calculate the
minimum or maximum point of the curve in the case of quadratic terms. It
also will graph the results and save the fits for facilitating additional
graphs.

 mcenter : module to center variables at their means. This routine
centers variables at their mean and creates new variables, C_varname,
with a mean of zero.  Use of the options can center variables at mean +/-
some multiple of the sd.


Jeffrey Simons



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