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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