Displaying 1 result from an estimated 1 matches for "6theoryd".
2009 Jul 01
2
'singularity' between fixed effect and random factor in mixed model
Hi,
I just came across the following issue regarding mixed effects models:
In a longitudinal study individuals (variable ind) are observed for some
response variable. One explanatory variable, f, entering the model as
fixed effect, is a (2-level) factor. The expression of that factor is
constant for each individual across time (say, the sex of the
individual). ind enters the model as grouping