Re: [R] propensity score adjustment using R

2008-10-06 Thread Marc Flockerzi
the Matching() package by Jasjeet Sekhon does propensity score matching in a very user friendly way. (as you said you don't want to reinvent the wheel...) just feed it with the fitted values from a glm model (fitted$myglmmodel). afaik, you may additionally match on some covariates directly. HTH m

Re: [R] ftables package, zero rows

2008-09-02 Thread Marc Flockerzi
7 0 1 0 1 > 8 0 1 0 1 > 9 1 0 0 0 best regards marc > -Ursprüngliche Nachricht- > Von: "Henrique Dallazuanna" <[EMAIL PROTECTED]> > Gesendet: 02.09.08 18:33:53 > An: "Marc Flockerzi" <[EMAIL PROTECTED]> > CC: r-help@r-project.org

[R] ftables package, zero rows

2008-09-02 Thread Marc Flockerzi
dear all, i'm just about to do some straightforward contingency tables using ftables (and ctab() for percents). the problem: factor "a" are regions, factor "b" are subregions. every region "a" consists of some subregions "b", but obviously not every subregion "b" is part of every region "a". i