Table 1 Patient characteristics

Age, year—median

67 [59–75]

71 [59–77]

0.09

Sex, Male

247 (75.3)

63 (63.0)

0.02

Medical history

Myocardial infarction

50 (15.2)

19 (19.0)

0.46

Congestive heart failure

52 (15.9)

26 (26.0)

0.03

Hypertension

124 (37.8)

48 (48.0)

0.09

Liver disease

6 (1.8)

4 (4.0)

0.40

Renal disease

24 (7.3)

18 (18.0)

0.003

Diabetes

66 (20.1)

37 (37.0)

0.001

Cerebrovascular disease

25 (7.6)

15 (15.0)

0.04

Dementia/cognitive impairment

13 (4.0)

6 (6.0)

0.56

Solid tumour

31 (9.5)

17 (17.0)

0.06

Cardiac arrest variables

Minutes to ROSC—median

25 [15–40]

10 [6–20]

 < 0.001

Witnessed cardiac arrest

256 (78.0)

83 (83.0)

0.35

Bystander CPR

206 (62.8)

N/A

N/A

Arrest with medical personnel present

39 (11.9)

100 (100.0)

N/A

Shockable rhythm

177 (54.1)^c

21 (21.2)^c

 < 0.001

Cardiac cause^a

246 (75.0)

38 (38.0)

 < 0.001

Admission data

GCS-M—median

1 [1, 2]^g

3 [1–5]^e

 < 0.001

Circulatory shock

103 (31.4)

32 (32.0)

1.00

ICU data

Patients regaining consciousness

128 (39.3)^d

66 (66)

 < 0.001

Days from CA to awakening

1 [1, 2]^e

1 [0–2]

0.001

WLST^b

181 (55.2)

34 (34.0)^c

 < 0.001

WLST due to poor neurological prognosis

159 (48)^f

26 (26)^d

 < 0.001

Days from CA to WLST

4 [2–5]^f

4 [3–6]^d

0.15

Follow-up

Good outcome, CPC 1–2

105 (32.0)

45 (45.0)

0.02

Poor outcome, CPC 3–5

223 (68.0)

55 (55.0)

0.02