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Sample size calculation scenarios
| Reduction in PIP (%) | Cluster size | ICC | Loss to follow-up (%) | Total sample size | No. of clusters |
|---|---|---|---|---|---|
| 10 | 20 | 0.01 | 20 | 997 | 50 |
| 10 | 20 | 0.025 | 20 | 1236 | 62 |
| 15 | 20 | 0.01 | 20 | 479 | 24 |
| 15 | 20 | 0.025 | 20 | 594 | 30 |
ICC intraclass correlation coefficient, PIP potentially inappropriate prescribing
