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RE: st: Adjusting for age in logistic regression


From   "G. ter Riet" <G.terRiet@amc.uva.nl>
To   statalist@hsphsun2.harvard.edu
Subject   RE: st: Adjusting for age in logistic regression
Date   Fri, 12 Nov 2004 09:28:18 +0100

Hi Peter,
I use to check the graph produced by this do file for Stata 8 to see whether age requires dummy coding. (<lowess> was <ksm> in Stata 7)

capture program drop smooth
program smooth
capture drop x prob smoothval  _Iage*
set more off
sort age
gen x=_n
xi: logistic yvar i.age, asis
predict prob, p
lowess prob x, gen(smoothval) logit
end


Gerben ter Riet, MD PhD, Academic Medical Center


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