Outcome at mean 4.5 years | Number of trials (n) | Weighted event rates | Odds Ratio (95% CI) | RRR (CI) | NNT (CI) |
---|---|---|---|---|---|

*Abbreviations defined in glossary; weighted event rates, RRR, RRI, NNT, NNH, and CI calculated from data in article using a random effects model. †Calculated from data in article using odds ratios. | |||||

Total mortality | |||||

All ages | 30 (26 708) | 4.0% v 4.0% | 0.98 (0.87 to 1.12) | 2% (−10 to 13) | Not significant |

Mean age <60 years | 17 (4141) | 2.7% v 4.3% | 0.61 (0.39 to 0.95) | 38% (5 to 60) | 61 (39 to 481)† |

RRI (CI) | NNH | ||||

Mean age >60 years | 13 (22 567) | 4.0% v 3.9% | 1.03 (0.9 to 1.18) | 3% (−9 to 17) | Not significant |