| Outcomes at study end | Number of trials (n) | Weighted event rates | RRR/RRI (95% CI) | NNT/NNH (CI) |
| Patient anxiety | 6 (681) | 17% v 18% | RRR 7% (−23 to 30) | Not significant |
| Patient depression | 8 (956) | 17% v 18% | RRR 6% (−18 to 26) | Not significant |
| Patient mortality | 8 (1350) | 7.3% v 9.3% | RRR 16% (−18 to 40) | Not significant |
| Carer stress | 4 (498) | 21% v 20% | RRI 6% (−18 to 37) | Not significant |
*Abbreviations defined in glossary. RRR, RRI, NNT, NNH, and CI calculated from data in article using a fixed-effects model.