Table 2. Factors contributing to survival of patients with out-of-hospital cardiac arrests until hospital admission in Kaohsiung, 2011–2013.
| Factors | Univariate | Multivariate | ||
|---|---|---|---|---|
| Odds ratio (95% CI) | p value | Odds ratio (95% CI) | p value | |
| Age > 65 (vs. < = 65) | 0.96 (0.82–1.12) | 0.611 | 0.91 (0.77–1.07) | 0.274 |
| Female (vs. Male) | 1.19 (1.02–1.39) | 0.022 | 1.24 (1.06–1.45) | 0.007 |
| Public area (vs. home) | 1.19 (0.99–1.43) | 0.060 | 1.30 (1.05–1.61) | 0.014 |
| Bystander CPR (vs. no bystander CPR) | 1.14 (0.92–1.40) | 0.215 | 1.01 (0.81–1.26) | 0.892 |
| AED shock(vs. no AED shock) | 1.86 (1.44–2.41) | < .001 | 1.70 (1.30–2.23) | < .001 |
| LMA (vs. no LMA) use | 1.52 (1.30–1.77) | < .001 | 1.35 (1.16–1.58) | < .001 |
| Non-trauma (vs. Trauma) | 1.37 (1.05–1.78) | 0.019 | 1.41 (1.04–1.90) | 0.022 |
| Medical center (vs. non-medical center) | 0.90 (0.76–1.06) | 0.236 | 0.84 (0.70–1.00) | 0.059 |
| Bypassed the closest hospital (vs. closest hospital) | 1.28 (1.10–1.49) | 0.001 | 1.28 (1.07–1.53) | 0.005 |
| High population density areas*(vs. low) | 2.25 (1.89–2.69) | < .001 | 1.89 (1.55–2.32) | < .001 |
| Time from the call to hospital admission (min) | 0.96 (0.95–0.98) | < .001 | 0.98 (0.96–0.99) | 0.002 |
| Transport distance (logarithm of km) | 0.84 (0.77–0.91) | < .001 | 0.98 (0.87–1.10) | 0.751 |
Abbreviations: CPR: cardiopulmonary resuscitation; AED: automated external defibrillator; LMA: laryngeal mask airway.
*> = 5,000 persons/km2.