Table 1:
Distribution of Demographic and Clinical Characteristics by Sex in Patients with OHCA
| Characteristic | Total (N= 326,138) n (%) | Men (N= 208,857) n (%) | Women (N= 117,281) n (%) | Standardized Difference |
|---|---|---|---|---|
| Age in years, median (IQR) | 63 (23) | 62 (22) | 65 (25) | 0.126 |
| Race | 0.151 | |||
| Black | 66,141 (20.3%) | 37,808 (18.1%) | 28,333 (24.2%) | 0.149 |
| White | 160,298 (49.2%) | 105,922 (50.7%) | 54,376 (46.4%) | 0.087 |
| Hispanic | 19,520 (6.0%) | 13,002 (6.2%) | 6,518 (5.6%) | 0.028 |
| Other | 9,976 (3.0%) | 6,304 (3.0%) | 3,672 (3.1%) | 0.006 |
| Unknown | 70,203 (21.5%) | 45,821 (21.9%) | 24,382 (20.8%) | 0.028 |
| Initial shockable rhythm | 69,633 (21.4%) | 52,375 (25.1%) | 17,258 (14.7%) | 0.262 |
| Bystander Witnessed | 143,959 (44.1%) | 95,411 (45.6%) | 48,548 (41.4%) | 0.087 |
| Bystander CPR initiated | 127,699 (39.2%) | 83,215 (39.8%) | 44,484 (37.9%) | 0.039 |
| Automated External Defibrillator applied prior to EMS arrival | 96,840 (29.7%) | 64,544 (30.9%) | 32,296 (27.5%) | 0.074 |
| Automated External Defibrillator shock delivered prior to EMS arrival | 27,373 (8.4%) | 21,178 (10.1%) | 6,195 (5.3%) | 0.183 |
| Public location of Arrest | 59,738 (18.3%) | 46,479 (22.2%) | 13,259 (11.3%) | 0.296 |
| Presumed Cardiac Etiology | 277,628 (85.1%) | 179,669 (86.0%) | 97,959 (83.5%) | 0.070 |
| Mechanical CPR Device Used | 75,473 (28.5%) | 49,073 (28.8%) | 26,400 (27.9%) | 0.022 |
| Automated CPR Feedback Device Used | 46,824 (18.3%) | 30,403 (18.5%) | 16,421 (17.9%) | 0.015 |
| Advanced Airway Successfully Placed | 213,197 (79.4%) | 136,821 (79.4%) | 76,376 (79.4%) | 0.002 |
| Impedance threshold device used | 46,906 (18.1%) | 30,193 (18.2%) | 16,713 (18.1%) | 0.003 |
| Were Drugs Administered | 261,279 (92.2%) | 168,049 (92.5%) | 93,230 (91.8%) | 0.025 |
| Vascular Access | 0.130 | |||
| IO (intraosseous catheter) | 135,506 (49.6%) | 83,829 (47.8%) | 51,677 (52.7%) | 0.099 |
| IV (intravenous catheter) | 98,015 (35.8%) | 66,440 (37.9%) | 31,575 (32.2%) | 0.119 |
| IO_IV (intraosseous & intravenous catheter) | 22,456 (8.2%) | 14,637 (8.3%) | 7,819 (8.0%) | 0.013 |
| No_IV(no IV access) | 17,448 (6.4%) | 10,506 (6.0%) | 6,942 (7.1%) | 0.044 |
| 12-Lead electrocardiogram (ECG) placed | 51,074 (19.5%) | 32,532 (19.3%) | 18,542 (19.7%) | 0.010 |