extract variance for random effects from "mer" object
Maas James Dr (MED <J.Maas <at> uea.ac.uk> writes:
I get an output from a glmer package, but would like to extract the variance of the Random effects, in this case called trtpair and the value is 0.
[snip]
fednmaout
Generalized linear mixed model fit by the Laplace approximation Formula: cbind(fednmadat$events, fednmadat$patnums - fednmadat$events) ~
treat + tn + (1 | trtpair)
AIC BIC logLik deviance 84.01 153.1 -9.006 18.01 Random effects: Groups Name Variance Std.Dev. trtpair (Intercept) 0 0 Number of obs: 60, groups: trtpair, 3
VarCorr(fednmaout)[[1]] (the [[1]] means to extract the variance for the first (and only in this case) random effect.)