Table 1. Characteristics of patients with out-of-hospital cardiac arrests in Kaohsiung, 2011–2013.
| Variable | Subgroup | Total (n = 5,838) | Death (n = 4,877) | Survival (n = 961) (%) | p value* |
|---|---|---|---|---|---|
| Age | < = 65 | 2,566 | 2,138 | 428 (16.6) | 0.695 |
| >65 | 3,272 | 2,739 | 533 (16.2) | ||
| Sex | Male | 3,727 | 3,151 | 576 (15.4) | 0.006 |
| Female | 2,111 | 1,726 | 385 (18.2) | ||
| Home | Yes | 4,652 | 3,904 | 748 (16.0) | 0.124 |
| No | 1,186 | 973 | 213 (17.9) | ||
| Bystander CPR (missing = 251) | Yes | 832 | 679 | 153 (18.3) | 0.083 |
| No | 4,755 | 3,997 | 758 (15.9) | ||
| AED shock (missing = 2) | Yes | 392 | 293 | 99 (25.2) | < .001 |
| No | 5,444 | 4,583 | 861 (15.8) | ||
| LMA use (missing = 699) | Yes | 2,087 | 1,673 | 414 (19.8) | < .001 |
| No | 3,052 | 2,628 | 424 (13.8) | ||
| Trauma | Yes | 668 | 582 | 86 (12.8) | 0.007 |
| No | 5,170 | 4,295 | 875 (16.9) | ||
| Emergency hospital level | Medical center | 1,737 | 1,471 | 266 (15.3) | 0.132 |
| Non-medical center | 4,101 | 3,406 | 695 (16.9) | ||
| Bypassed the closest hospital | Yes | 2,374 | 1,946 | 428 (18.0) | 0.007 |
| No | 3,464 | 2,931 | 533 (15.3) | ||
| High population density areas** | Yes | 3,632 | 2,900 | 732 (20.1) | < .001 |
| No | 2,206 | 1,977 | 229 (10.3) | ||
| Mean time from the call to hospital admission (min) | - | 20.4 (SD = 8.0) | 20.6 (SD = 8.0) | 18.9 (SD = 7.7) | - |
| Mean transport distance (logarithm of km) | - | 3.9 (SD = 5.1) | 4.0 (SD = 5.1) | 3.3 (SD = 4.9) | - |
Abbreviations: CPR: cardiopulmonary resuscitation; AED: automated external defibrillator; LMA: laryngeal mask airway.
*Equal proportion (χ2) tests on survival by subgroup.
**> = 5,000 persons/km2.