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Power for detecting given effect sizes under various design scenarios.
| Number of clusters | Patients per cluster | ICC = 0.002 | ICC = 0.005 | ICC = 0.01 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| Effect size (in SDUs) | Effect size (in SDUs) | Effect size (in SDUs) | ||||||||||||||
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| 0.16 | 0.18 | 0.20 | 0.22 | 0.24 | 0.16 | 0.18 | 0.20 | 0.22 | 0.24 | 0.16 | 0.18 | 0.20 | 0.22 | 0.24 | ||
| 120 | 8 | 68% | 78% | 86% | 92% | 96% | 68% | 78% | 86% | 91% | 95% | 66% | 76% | 84% | 90% | 95% |
| 106 | 8 | 63% | 73% | 82% | 88% | 93% | 62% | 72% | 81% | 88% | 93% | 61% | 71% | 80% | 87% | 92% |
