Advance provision v standard provision of emergency contraception (EC) to women of reproductive age*
| Weighted event rates | |||||
|---|---|---|---|---|---|
| Outcomes at 3–12 months | Number of trials (n) | Advance provision | Standard provision | RRR (95% CI) | NNT (CI) |
| *Abbreviations defined in glossary. Weighted event rates, RRR, RBI, NNT, and CI calculated from control event rates and odds ratios in article. | |||||
| Pregnancy at 6 months | 7 (6035) | 3.5% | 3.8% | 8.7% (−18 to 30) | Not significant |
| Pregnancy at 12 months | 4 (4690) | 5.5% | 5.5% | 0% (−27 to 21) | Not significant |
| Sexually transmitted disease | 3 (2829) | 7.0% | 7.1% | 0.9% (−31 to 26) | Not significant |
| RBI (95% CI) | |||||
| Ever use of EC | 7 (6327) | 35% | 18% | 99% (53 to 151) | 6 (4 to 11) |
| Multiple use of EC | 3 (4574) | 21% | 5.9% | 249% (69 to 538) | 7 (4 to 25) |