where we have recently added a 50 page 'concepts' report on multilevel modelling of continuous response three-level data. The illustrative application is a three-level students within school-cohorts within schools analyses.
You will also find there an additional 50 page 'practical' on how to conduct three-level analyses in MLwiN and Stata with other packages to follow. This practical replicates the analyses by Hedeker (1994) who fits a three-level students-within-classes-within-schools model. Data sets and syntax files are provided so that you can replicate all analyses.
Best wishes
George
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