Journal
JOURNAL OF EDUCATIONAL AND BEHAVIORAL STATISTICS
Volume 34, Issue 2, Pages 229-237Publisher
SAGE PUBLICATIONS INC
DOI: 10.3102/1076998609332756
Keywords
empirical bayes; sample size estimation; school randomized trials; intraclass correlation coefficient
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The educational field has now accumulated an extensive literature reporting on values of the intraclass correlation coefficient, a parameter essential to determining the required size of a planned cluster randomized trial. We propose here a simple simulation-based approach including all relevant information that can facilitate this task. An example and corresponding computer code is attached.
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