Atrial-synchronised biventricular pacing v no pacing in heart failure†
| Outcomes at 6 months | Resynchronisation | No pacing | RBI (95% CI) | NNT (CI) |
|---|---|---|---|---|
| Improved by ≥ 2 NYHA classes | 16% | 6.1% | 163% (43 to 391) | 11 (7 to 26) |
| Improved by 1 NYHA class | 52% | 32% | 63% (29 to 109) | 5 (4 to 10) |
| RRR (CI) | ||||
|---|---|---|---|---|
| †NYHA = New York Heart Association. Other abbreviations defined in glossary; RBI, NNT, and CI calculated from data in article. | ||||
| ‡Event rates, RRR, NNT, and CI calculated from Cox proportional hazards ratio. | ||||
| Death or worsening of heart failure | 12% | 20% | 37% (3.6 to 60) | 14 (9 to 143) |