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Practical and methodological challenges when conducting a cluster randomized trial: Examples and recommendations
Agnès Caille1, Laurent Billot2, Jessica Kasza3
1Université de Tours, Université de Nantes, INSERM, SPHERE U1246, Tours, France; INSERM CIC 1415, CHRU de Tours, Tours, France.
Abstract:
The use of cluster randomized trial design to answer research questions is increasing. This design and associated variants such as the cluster randomized crossover and stepped wedge are useful to assess complex interventions in a pragmatic way but when adopting such designs, one may face specific implementation challenges. This article summarizes common challenges faced when conducting cluster randomized trials, cluster randomized crossover trials, and stepped wedge trials, and provides recommendations.
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