including mixed-effects linear regression, mixed-effects logistic regression for nominal or ordinal outcomes, mixed-effects probit regression for ordinal outcomes, mixed-effects Poisson regression, and mixed-effects grouped-time survival analysis.These models are also called multilevel models, hierarchical linear models, random-effects models, and random coefficients models, to name a few.


The statistical research presented in this website is based on the collaborative effort of Donald Hedeker and Robert D. Gibbons of the University of Illinois at Chicago.
The computer programs were written by Don with interfaces written by
Discerning Systems, Inc.

Last updated June 20, 2001