Table 1 Power calculations for sample of 120Difference between groups
| Â | Power | Difference between groups | Power |
|---|---|---|---|
70% × 60% | 21% | 40% × 30% | 21% |
70% × 50% | 61% | 40% × 20% | 67% |
70% × 45% | 80% | 40% × 15% | 88% |
70% × 40% | 92% |  |  |
60% × 50% | 20% | 30% × 20% | 24% |
60% × 40% | 59% | 30% × 15% | 50% |
60% × 35% | 79% | 30% × 10% | 79% |
60% × 30% | 92% |  |  |
50% × 40% | 20% | 20% × 15% | 11% |
50% × 30% | 61% | 20% × 10% | 33% |
50% × 25% | 82% | 20% × 5% | 70% |