[R-sig-ME] Random slopes for categorical variables
Timothy MacKenzie
|@w|@wt @end|ng |rom gm@||@com
Wed Oct 6 05:20:00 CEST 2021
Hello All,
I had a basic question. For continuous variables (X) killing the
intercept in the random part kills the correlation between random
effects (intercepts and slopes):
(0 + X | ID)
But for categorical variables (CAT) killing the intercept actually
allows for all levels of CAT (including the reference level) to be
correlated that is:
(0 + CAT | ID) estimates more correlations than (CAT | ID)
Am I correct?
Thanks,
Tim M
More information about the R-sig-mixed-models
mailing list