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. 2016 Mar;106(3):453–457. doi: 10.2105/AJPH.2016.303068

TABLE 1—

Enrollment and Randomization Plans for a Hypothetical Cluster Randomized Trial (CRT) and Stepped Wedge Design With the Same Number of Clusters and Same Proportion Randomized to the Intervention

CRT Stepped Wedge Design
Cluster Time Time Time Time Time Time
1 1 1 2 3 4 5
2 x o x x x x
3 x o x x x x
4 x o o x x x
5 x o o x x x
6 o o o o x x
7 o o o o x x
8 o o o o o x
9 o o o o o x