Table 3.
Outcomes in time dependent propensity score sequentially matched cohort
| Outcomes* | No (%) patients with outcome/total patients | Unadjusted risk ratio (95% CI) | Adjusted risk ratio† (95% CI) | |
|---|---|---|---|---|
| No AAM | AAM | |||
| Shockable rhythm | ||||
| Survival | 1500/8057 (18.6) | 1546/8057 (19.2) | 1.09 (1.02 to 1.17) | 1.00 (0.93 to 1.07) |
| Favourable functional survival | 865/8057 (10.7) | 776/8057 (9.6) | 0.97 (0.88 to 1.07) | 0.87 (0.79 to 0.96) |
| Non-shockable rhythm | ||||
| Survival | 2127/118 021 (1.8) | 2696/118 021 (2.3) | 1.26 (1.19 to 1.34) | 1.27 (1.20 to 1.35) |
| Favourable functional survival | 489/118 021 (0.4) | 499/118 021 (0.4) | 1.10 (0.96 to 1.26) | 1.11 (0.97 to 1.26) |
AAM=advanced airway management.
*
At one month or at hospital discharge within one month.
†
Each risk ratio was adjusted for prefecture preference categories for performing supraglottic airway placement and endotracheal intubation, year, season, day, time, age, sex, cause of cardiac arrest, witness category, basic life support by bystander with or without dispatcher instruction, use of public access defibrillator, pre-hospital involvement of physician, time from call to cardiopulmonary resuscitation by emergency medical services personnel, defibrillation before matching, and administration of adrenaline before matching.