[R] predict from glmer

Ben Bolker bolker at ufl.edu
Wed Nov 25 13:39:56 CET 2009


sj <ssj1364 <at> gmail.com> writes:

> predPN <- model.matrix(terms(mod.PN),newDat) %*% fixef(mod.PN)
> 
> this seems to work fine and the I print the predictions
> 
> print(PredPN)
>     [1]                 [2]
> 2.358722     2.312340
> 
> However I am not certain what I am looking at here,  my best guess is that
> each of these could the odds (p/1-p). But I am not at all sure in my guess,
> any insights would be appreciated

   These are most likely to be log-odds rather than odds.
(gmane wants me to say more or quote less ... you can use
plogis(PredPN) to get the probabilities.)




More information about the R-help mailing list