Multilevel models

GLLAMM: estimates Generalized Linear Latent And Mixed Models.
These models include multilevel (hierarchical) regression models
with an arbitrary number of levels, generalized linear mixed models,
multilevel factor models and some types of latent class models.
We refer to the random effects (random intercepts, slopes or coefficients),
factors, etc. as latent variables or random effects. See http://www.gllamm.org.

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