Subgroup analysis
| Subgroups | In-hospital survival | Survival with favourable neurological outcome | ||
| Pooled OR (95% CI) | I2 (%) | Pooled OR (95% CI) | I2 (%) | |
| Methodological rigour | ||||
| High | 1.56 (1.29 to 1.89) n=4 | 28 | 1.50 (1.30 to 1.75) n=2 | 0 |
| Low | 2.13 (1.86 to 2.43) n=12 | 0 | 2.06 (1.53 to 2.77) n=11 | 56 |
| Rhythm | ||||
| Only included patients with a shockable rhythm | 2.03 (1.38 to 2.99) n=4 | 51 | 1.50 (1.29 to 1.73) n=4 | 0 |
| Included patients with both shockable and non-shockable rhythm | 1.93 (1.66 to 2.24) n=12 | 79 | 2.20 (1.59 to 3.05) n=9 | 61 |
| STEMI | ||||
| Only included patients without STEMI | 1.77 (0.96 to 3.25) n=3 | 55 | 1.50 (1.15 to 1.96) n=3 | 0 |
| Included patients regardless of whether STEMI was present | 1.91 (1.70 to 2.23) n=13 | 26 | 2.13 (155 to 2.91) n=10 | 69 |
STEMI, ST-elevation myocardial infarction.