A stepped-wedge trial is a type of experimental design often used in health research, particularly for evaluating the effectiveness of interventions in cluster-randomized trials. In a stepped-wedge design, different groups (or clusters) receive the intervention at different time points. This approach involves switching from a control condition to an intervention condition in a staggered manner over time, resembling a stepwise progression. ### Key Characteristics: 1. **Clusters**: Participants are organized into groups or clusters (e.g.
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