Weighted event rate | |||||
Outcome at 4 months to 7 years | Number of RCTs (n) | Intervention | Control | RRR (95% CI) | NNT (CI) |
Self-reported or medically-attended injuries | 9 (4806) | 14% | 18% | 18% (5 to 29) | 25 (15 to 100) |
*RCTs, randomised controlled trials; other abbreviations defined in glossary. RRR, NNT, and CI based on a random-effects model.