MIXPREG – mixed effects models

MIXPREG, MIXOR, MIXREG, MIXGSUR and MIXNO are a collection of high quality generalized regression modeling tools that allows for mixed effects and various forms of censoring. Correlated, nested and hierarchical data structures are also addressed. Estimation and inference is based on a full-information maximum likelihood approach rather than a Taylor expansion to linearized the likelihood. The software is free and WinXp, Solaris and Mac versions are available.