This site provides description of a free software package, MLPowSim, that calculates power for complex random effects models. It was developed by the Centre for Multilevel Modelling, the same group that developed the LMwiN package for analysis of complex random effects models.

Bristol University | Centre for Multilevel Modelling | MLPowSim. Available at:


This Recommendation was added to the website on 2014-06-16 and was last modified on 2020-02-29. You can find similar pages at Longitudinal data, Sample size.

An earlier version of this page appears here.