Murray, David M.; Blitstein, Jonathan L.; Hannan, Peter J. - In: Evaluation Review 36 (2012) 6, pp. 430-448
Background:This article revisits an article published in Evaluation Review in 2005 on sample size estimation and power analysis for group-randomized trials. With help from a careful reader, we learned of an important error in the spreadsheet used to perform the calculations and generate the...