Table 3 Results of multivariate logistic regression analyses for variables associated with one-month outcomes

 2008

 2009

0.87

(0.64–1.17)

1.09

(0.49–2.38)

 2010

0.93

(0.69–1.24)

1.18

(0.53–2.54)

 2011

1.06

(0.79–1.40)

1.26

(0.59–2.64)

 2012

1.25

(0.94–1.65)

1.50

(0.72–3.12)

Age, years

 <1

1.35

(1.04–1.77)

0.69

(0.37–1.29)

 1–11

1.61

(1.25–2.09)

0.68

(0.37–1.23)

 12–18

Boy

0.84

(0.69–1.01)

0.78

(0.48–1.29)

Bystander-witnessed arrest

1.62

(1.32–2.00)

3.22

(1.84–5.79)

Bystander CPR

1.41

(1.16–1.71)

1.49

(0.90–2.53)

Presumed cardiac cause

0.68

(0.54–0.84)

1.69

(0.99–2.87)

Initial cardiac rhythm

 Ventricular fibrillation/pulseless ventricular tachycardia

5.16

(3.63–7.27)

16.0

(8.06–32.0)

 Pulseless electrical activity

2.83

(2.26–3.54)

5.19

(2.77–9.82)

 Asystole

Call-to-response time, minutes

 ≤5

1.35

(0.95–1.95)

1.25

(0.50–3.58)

 6–10

1.25

(0.90–1.77)

1.19

(0.52–3.26)

 ≥11

Call-to-hospital-arrival time, minutes

 ≤20

2.21

(1.53–3.27)

2.81

(0.99–10.1)

 21– 30

1.61

(1.13–2.33)

2.31

(0.87–7.94)

 31– 40

1.24

(0.84–1.85)

1.55

(0.52–5.66)

 ≥41