Optimal Design Software

The Optimal Design for Multi-Level and Longitudinal Research is a free stand-alone software program for performing statistical power calculations of impact evaluation studies, particularly group-randomized trials. Click here to access its current version and documentation.

Suggested citation:

Raudenbush, S. W., et al. (2011). Optimal Design Software for Multi-level and Longitudinal Research (Version 3.01) [Software]. Available from www.wtgrantfoundation.org.


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The work reported here has been generously funded by the William T. Grant Foundation