Sample size requirements for stratified cluster randomization designs
- 1 January 1992
- journal article
- research article
- Published by Wiley in Statistics in Medicine
- Vol. 11 (6), 743-750
- https://doi.org/10.1002/sim.4780110605
Abstract
Sample size requirements are provided for designs of studies in which clusters are randomized within each of several strata, where cluster size itself may be a stratifying factor. The approach generalizes a formula derived by Woolson et al., which provides sample size requirements for the Cochran-Mantel-Haenszel statistic. Issues of data analysis are also discussed.Keywords
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