R: Extract SE of Fixed Effects of 'coxme', 'glmer', and 'lmekin'...
extractSE
R Documentation
Extract SE of Fixed Effects of coxme, glmer, and
lmekin Fit
Description
This function extracts the standard errors (SE) of the fixed effects of
a mixed model fit with coxme, glmer, lmer, and
lmekin and adds the appropriate labels.
Usage
extractSE(mod, ...)
## S3 method for class 'coxme'
extractSE(mod, ...)
## S3 method for class 'lmekin'
extractSE(mod, ...)
## S3 method for class 'mer'
extractSE(mod, ...)
## S3 method for class 'merMod'
extractSE(mod, ...)
Arguments
mod
an object of coxme, lmekin, mer or merMod
class.
...
additional arguments passed to the function.
Details
These are extractor functions that use vcov.coxme,
vcov.lmekin, vcov.mer, and vcov.merMod. Some of
these functions are called by modavg, depending on the class of
the objects.
Value
Returns the SE's of the fixed effects with the appropriate labels for each.
Author(s)
Marc J. Mazerolle
See Also
modavg, glmer,
lmer, coxme,
lmekin
Examples
##modified example from ?glmer
## Not run:
if(require(lme4)) {
##create proportion of incidence
cbpp$prop <- cbpp$incidence/cbpp$size
gm1 <- glmer(prop ~ period + (1 | herd), family = binomial,
weights = size, data = cbpp)
##print summary
summary(gm1)
##extract variance-covariance matrix of fixed effects
vcov(gm1)
##extract SE's of fixed effects - no labels
sqrt(diag(vcov(gm1))) #no labels
extractSE(gm1) #with labels
detach(package:lme4)
}
## End(Not run)