Table 6 Results of logistic regression analysis: adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for the factors related to one-month survival

Age

(0.96–0.97)

Sex (0: female, 1: male)

(1.02–1.37)

Origin of OHCA (0: non cardiac, 1: cardiac)

(2.26–3.49)

Relationship between bystander and patient (family member), no. (%)

(0.68–0.88)

Chest compressions (0: no, 1: yes)

(1.06–1.38)

Rescue breathing (0: no, 1: yes)

(0.86–1.32)

Emergency life-saving technician in ambulance (0: no, 1: yes)

(0.87–2.02)

Advanced life support by MD (0: no, 1: yes)

(0.67–0.95)

Time from call to arrival at scene (min)

(0.94–0.98)

Time from call to arrival at hospital (min)

(0.93–0.99)

Use of ALS devices (0: no, 1: laryngeal mask/an adjunct airway/ tracheal tubes)

(0.59–0.79)

Epinephrine use (yes), no. (%)

(0.28-0.39)

Time from the first defibrillation to the first ROSC before hospital arrival (0: ≥2 min, 1: ≤1 min)

(1.18–1.78)

Number of defibrillations (0: ≥3, 1: ≤2)

(1.03–1.38)