The terms
object is produced by mixmeta
when fitting the meta-analytical model, and stored as an attribute of the model.frame
. Note that this object consists of terms for both the fixed and random-effects parts, the latter including also the grouping factors.
By using the default type="fixed"
, this method function removes the random-effects terms. This can then be used, for instance, for creating the model.matrix
for the fixed effects. Otherwise with type="full"
, the full set of terms is returned.