[R] using weights in lrm
lindners at umich.edu
Tue Jul 4 10:52:38 CEST 2006
just a quick question regarding weights in logistic regression. I do
results <- lrm(y.js ~
,x=T,y=T, data=d.caps1y, weights=weightsd, normwt=TRUE
The regression works (in the sense that the results are not way off
the one w/o wighting the sample), but I get the following warning messages:
1: number of items to replace is not a multiple of replacement length
2: currently weights are ignored in model validation and bootstrapping lrm fits in: lrm(y.js ~ h.hhsize + h.death1 + h.ill1 + h.ljob1 + h.fin1 +
Perhaps someone can help me clearifying the warning messages -- thanks
a lot in advance !
Stephan Lindner, Dipl.Vw.
Doctoral Student in Economics
1512 Gilbert Ct., V-17
Ann Arbor, Michigan 48105
E-Mail: lindners at umich.edu
"If I have seen further it is by standing on the shoulders of giants."
-- Isaac Newton
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