Table 3.
Characteristics of Patients Included in the Primary Analysis
| Overall N=3793 |
Primary Propensity Analysis (n=1724) |
BVM only (n=781, 45.3%) |
ETI (n=727, 42.2%) |
SGA (n=215, 12.5%) |
||||
|---|---|---|---|---|---|---|---|---|
| Age, mean(SE) | 3.76 (0.09) | 3.69 (0.13) | 2.25 (0.15) | 3.78 (0.20) | 8.59 (0.45) | |||
| Female, n(%) | 1513 (39.9%) | 713 (41.4%) | 331 (42.4%) | 299 (41.1%) | 83 (38.6%) | |||
| Witness and Bystander CPR, n(%) | ||||||||
| Bystander witnessed | 860 (22.7%) | 379 (22%) | 152 (19.4%) | 159 (21.8%) | 69 (31.8%) | |||
| EMS Witnessed | 184 (4.9%) | 94 (5.5%) | 36 (4.6%) | 38 (5.2%) | 21 (9.6%) | |||
| Unwitnessed | 2749 (72.5%) | 1251 (72.6%) | 594 (76.0%) | 531 (73.0%) | 126 (58.6%) | |||
| Bystander Compressions | 1578 (41.6%) | 677 (39.3%) | 304 (38.9%) | 292 (40.1%) | 81 (37.8%) | |||
| Bystander Ventilations | 913 (24.1%) | 312 (18.1%) | 156 (20.0%) | 129 (17.8%) | 26 (12.2%) | |||
| Time variables in minutes, mean(SE) | ||||||||
| Time to EMS arrival | 8.11 (0.15) | 7.84 (0.14) | 7.60 (0.17) | 7.91 (0.20) | 8.51 (0.35) | |||
| EMS Scene Time | 19.4 (0.46) | 19.97 (0.43) | 15.27 (0.52) | 22.63 (0.65) | 28.04 (1.39) | |||
| Transport Time | 11.31 (0.29) | 11.78 (0.32) | 10.55 (0.29) | 12.18 (0.47) | 14.92 (1.00) | |||
| Location of arrest, n(%) | ||||||||
| Healthcare | 92 (2.4%) | 38 (2.2%) | 18 (2.3%) | 16 (2.2%) | 4 (2.0%) | |||
| Public Building | 220 (5.8%) | 92 (5.3%) | 34 (4.4%) | 39 (5.4%) | 18 (8.5%) | |||
| Street/Highway | 107 (2.8%) | 39 (2.3%) | 17 (2.2%) | 13 (1.7%) | 9 (4.3%) | |||
| Place of Recreation | 141 (3.7%) | 54 (3.1%) | 18 (2.3%) | 21 (2.9%) | 15 (7.1%) | |||
| Home | 3194 (84.2%) | 1484 (86.1%) | 690 (88.4%) | 628 (86.4%) | 165 (76.8%) | |||
| Other | 39 (1%) | 17 (1%) | 4 (0.5%) | 10 (1.4%) | 3 (1.4%) | |||
| Initial rhythm, n(%) | ||||||||
| Shockable | 271 (7.1%) | 108 (6.3%) | 38 (4.9%) | 35 (4.7%) | 35 (16.5%) | |||
| PEA | 489 (12.9%) | 226 (13.1%) | 102 (13.0%) | 93 (12.7%) | 31 (14.6%) | |||
| Asystole | 2619 (69%) | 1173 (68.1%) | 525 (67.2%) | 527 (72.4%) | 121 (56.4%) | |||
| Non-airway resuscitation, n(%) | ||||||||
| Epinephrine given | 2831 (74.6%) | 1314 (76.2%) | 482 (61.7%) | 644 (88.5%) | 188 (87.4%) | |||
| Defibrillation | 669 (17.6%) | 198 (11.5%) | 66 (8.5%) | 74 (10.2%) | 57 (26.5%) | |||
| Outcomes, n(%) | ||||||||
| Sustained ROSC | 786 (20.7%) | 346 (20.1%) | 141 (18.0%) | 148 (20.3%) | 58 (27.0%) | |||
| Survival to hospital admission | 1019 (26.9%) | 455 (26.4%) | 201 (25.7%) | 185 (25.4%) | 69 (32.2%) | |||
| Survival to hospital discharge | 430 (11.3%) | 183 (10.6%) | 110 (14.1%) | 51 (7.0%) | 22 (10.2%) | |||
| Survival to discharge PCPC=1 or 2 | 331 (8.7%) | 136 (7.9%) | 89 (11.4%) | 34 (4.7%) | 13 (6.0%) | |||
*
N within each airway varies +/− 1 observation due to rounding error.