RSV antibody: clinically useful measures of effect
| Event | CER | EER | RRR | ARR (95% CI) | NNT (95% CI) | Expenditure (£) to prevent one hospital admission (95% CI) |
| Hospital admission (all) | 10.6% | 4.8% | 55% | 5.8% (3 to 9) | 17 (11 to 33) | 25500 (16500 to 49500) |
| Premature (no BPD) | 8.1% | 1.8% | 78% | 6.3% (3 to 10) | 16 (10 to 39) | 24000 (15000 to 58500) |
| Previous BPD | 12.8% | 7.9% | 39% | 5.1% (0.4 to 9.8) | 20 (10 to 250) | 30000 (15000 to 375000) |
CER, control event rate; EER, experimental event rate.