[R] weights in glmrob

From: Celso Barros <celso.barros_at_gmail.com>
Date: Mon 10 Jul 2006 - 16:29:57 EST


Dear List members,

        I am runnning a logistic regression that includes sample weights (expressed by a variable called WEIGHT) using glmob (from robustbase). My model looks like this:

       B12<-glmrob(SERE~COMP+COM,family=binomial,weights=WEIGHT)

       When I include the weights, my standard error columns, as well as the p-values, show only NAs. If I exclude weights=WEIGHTS, everything works. I would like to use the weights. Does anyone know what could be the problem?

       Thanks in advance,

                                           Celso

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