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Key passage(s)
Acknowledgements
The editors are grateful to:
Robert Boruch, University of Pennsylvania, and Howard Bloom, MDRC, for suggestions offered on an earlier draft of the commentary attached to this record.
Key articles
- Klar N, Donner A (2004).
The impact of EF Lindquist’s 1940 text “Statistical Analysis in Educational Research” on cluster randomization. - Moberg J, Kramer M (2015).
A brief history of the cluster randomized trial design.