Table 2.
Summary of finding table.
| Outcomes | Anticipated absolute effects* (95% CI) | Relative effect (95% CI) | No. of participants (studies) | Certainty of the evidence (GRADE) | |
|---|---|---|---|---|---|
| Risk with BLS | Risk with ALS | ||||
| Mortality (CTs) | 139 per 1,000 | 156 per 1,000 (133 to 180) | OR 1.14 (0.95 to 1.36) | 3,928 (2 studies) | ⊕ ⊕ ⊕ ○ Moderate |
| Mortality (OS) | 161 per 1,000 | 231 per 1,000 (201 to 263) | OR 1.56 (1.31 to 1.86) | 97,062 (8 studies) | ⊕ ○○ ○ Very low |
| Disability of CNS (CTs) | 273 per 1,000 | 296 per 1,000 (248 to 348) | OR 1.12 (0.88 to 1.42) | 1,394 (2 studies) | ⊕ ⊕ ○ ○ LOW |
| On-scene time (CTs) | The mean total time on scene was 0 | MD 0.96 lower (6.64 lower to 4.72 higher) | - | 3,034 (2 studies) | ⊕ ⊕ ⊕ ○ Moderate |
| On-scene time (OS) | The mean on-scene time was 0 | MD 1.26 higher (0.07 higher to 2.45 higher) | - | 1,258 (3 studies) | ⊕ ⊕ ○ ○ LOW |
*
The risk in the ALS group (and its 95% confidence interval) is based on the assumed risk in the BLS group and the relative effect of the ALS (and its 95% CI).
CI, confidence interval; BLS, basic life support; ALS, advanced life support; GRADE, The Grading of Recommendations Assessment, Development and Evaluation, RCT, randomized control trial; OS, observational study; OR, odds ratio; CNS, central nerve system; MD, mean difference.