Table 1 Patient characteristics in relation to outcome

Age, years

61 (52–69)

68 (61–76)

1.06 (1.05–1.07)

<0.0001

Female sex

66 (15)

111 (23)

1.69 (1.18–2.43)

0.004

BMI (5/20)^c

25.3 (23.4–27.8)

26.1 (23.9–29.4)

1.05 (1.01–1.08)

0.006

Alcoholism (0/2)

10 (2)

26 (5)

3.12 (1.45–6.71)

0.004

COPD/asthma (0/1)

31 (7)

65 (13)

1.62 (1.01–2.58)

0.04

Previous heart failure (0/3)

16 (4)

44 (9)

1.75 (0.95–3.22)

0.07

Diabetes (2/4)

51 (12)

89 (18)

1.41 (0.96–2.08)

0.08

CABG (0/4)

26 (6)

62 (13)

1.49 (0.90–2.44)

0.12

TIA/stroke (1/3)

23 (5)

50 (10)

1.51 (0.89–2.57)

0.13

Malignancy (3/4)

9 (2)

22 (4)

1.89 (0.82–4.35)

0.13

Epilepsy (1/1)

11 (3)

5 (1)

0.46 (0.15–1.47)

0.19

Arrhythmia (0/2)

60 (14)

103 (21)

1.26 (0.87–1.83)

0.21

ICD (3/1)

1 (<1)

4 (<1)

3.77 (0.40–35.44)

0.25

Hypertension (1/3)

150 (34)

222 (45)

1.15 (0.86–1.52)

0.35

Dialysis (0/1)

2 (<1)

4 (<1)

1.78 (0.32–10.10)

0.51

IHD (1/2)

101 (23)

157 (32)

1.10 (0.80–1.50)

0.57

Intravenous drug abuse (2/1)

2 (<1)

2 (<1)

1.67 (0.21–13.04)

0.63

Pacemaker (2/2)

11 (3)

21 (4)

1.17 (0.54–2.52)

0.68

Cardiac valve surgery (1/4)

10 (2)

15 (3)

1.17 (0.50–2.73)

0.71

PCI (0/4)

45 (10)

62 (13)

1.08 (0.70–1.65)

0.73

Previous cardiac arrest (0/2)

9 (2)

12 (2)

1.13 (0.44–2.91)

0.79

Immunodeficiency (2/1)

2 (<1)

2 (<1)

1.16 (0.14–9.25)

0.89

Previous AMI (0/2)

79 (18)

112 (23)

0.99 (0.70–1.39)

0.94

Cirrhosis (0/1)

0 (0)

3 (<1)

AIDS (4/4)

1 (<1)

0 (0)