Intracutaneous (IC) and subcutaneous (SC) injections of sterile water v placebo for relieving labour pain (VAS score reduction ≥4.0 cm)†
| Comparisons | Sterile water | Placebo | RBI (95% CI) | NNT (CI) |
|---|---|---|---|---|
| †VAS = visual analogue scale. Other abbreviations defined in glossary; RBI, NNT, and CI calculated from data in article. | ||||
| IC v placebo at 10 min | 63% | 25% | 150% (35 to 393) | 3 (2 to 8) |
| SC v placebo at 10 min | 58% | 25% | 130% (23 to 358) | 4 (2 to 12) |
| IC v placebo at 45 min | 59% | 25% | 134% (21 to 387) | 3 (2 to 13) |
| SC v placebo at 45 min | 52% | 25% | 107% (4 to 337) | 4 (3 to 82) |