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Fig. 2 | Trials

Fig. 2

From: The randomization-induced risk of a trial failing to attain its target power: assessment and mitigation

Fig. 2

Density plot (histogram) of the power distribution. Upper panel: Individually randomized trial from Example 1 with unrestricted randomization. Middle panel: Stepped-wedge trial from Example 4 with unrestricted randomization. Lower panel: Stepped-wedge trial from Example 4 with restricted randomization (four largest clusters transitioning to intervention at the first or last step, two clusters at each of these steps).

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