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Optimal allocation of clusters in cohort stepped wedge designs

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  • Li, Fan
  • Turner, Elizabeth L.
  • Preisser, John S.

Abstract

We study optimal allocation of clusters for a fixed number of periods in cohort stepped wedge cluster randomized trials. The optimal design turns more clusters into treatment during the second and final periods, and depends on values of correlation parameters.

Suggested Citation

  • Li, Fan & Turner, Elizabeth L. & Preisser, John S., 2018. "Optimal allocation of clusters in cohort stepped wedge designs," Statistics & Probability Letters, Elsevier, vol. 137(C), pages 257-263.
    • Handle: RePEc:eee:stapro:v:137:y:2018:i:c:p:257-263
    DOI: 10.1016/j.spl.2018.02.002
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    References listed on IDEAS

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    1. repec:aph:ajpbhl:10.2105/ajph.2017.303707_9 is not listed on IDEAS
    2. repec:aph:ajpbhl:10.2105/ajph.2017.303706_3 is not listed on IDEAS
    3. Lawrie, Jock & Carlin, John B. & Forbes, Andrew B., 2015. "Optimal stepped wedge designs," Statistics & Probability Letters, Elsevier, vol. 99(C), pages 210-214.
    4. Turner, E.L. & Prague, M. & Gallis, J.A. & Li, F. & Murray, D.M., 2017. "Review of recent methodological developments in group-randomized trials: Part 2-analysis," American Journal of Public Health, American Public Health Association, vol. 107(7), pages 1078-1086.
    5. Turner, E.L. & Li, F. & Gallis, J.A. & Prague, M. & Murray, D.M., 2017. "Review of recent methodological developments in group-randomized trials: Part 1 - Design," American Journal of Public Health, American Public Health Association, vol. 107(6), pages 907-915.
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    Citations

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    Cited by:

    1. John N. S. Matthews, 2020. "Highly efficient stepped wedge designs for clusters of unequal size," Biometrics, The International Biometric Society, vol. 76(4), pages 1167-1176, December.
    2. Bowden, Rhys & Forbes, Andrew B. & Kasza, Jessica, 2021. "On the centrosymmetry of treatment effect estimators for stepped wedge and related cluster randomized trial designs," Statistics & Probability Letters, Elsevier, vol. 172(C).
    3. Ruoxuan Xiong & Susan Athey & Mohsen Bayati & Guido Imbens, 2019. "Optimal Experimental Design for Staggered Rollouts," Papers 1911.03764, arXiv.org, revised Sep 2023.
    4. Jessica Kasza & Andrew B. Forbes, 2019. "Information content of cluster–period cells in stepped wedge trials," Biometrics, The International Biometric Society, vol. 75(1), pages 144-152, March.

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