Table 1 Characteristics of OHCA and IHCA patients

Age, years–median (IQR)

67 (59–75)

71 (59–77)

Sex, male–n (%)

247 (75)

63 (63)

Medical history

 Myocardial infarction–n (%)

50 (15)

19 (19)

 Congestive heart failure–n (%)

52 (16)

26 (26)

 Hypertension–n (%)

124 (38)

48 (48)

 Liver disease–n (%)

6 (2)

4 (4)

 Renal disease–n (%)

24 (7)

18 (18)

 Diabetes–n (%)

66 (20)

37 (37)

 Cerebrovascular disease–n (%)

25 (8)

15 (15)

 Dementia/cognitive impairment–n (%)

13 (4)

6 (6)

 Solid tumour–n (%)

31 (9.5)

17 (17)

Cardiac arrest characteristics

 Time to ROSC, min–median (IQR)

25 (15–40)

10 (6–20)

 Witnessed cardiac arrest–n (%)

256 (78)

83 (83)

 Bystander-performed CPR–n (%)

206 (63)

NA

 Arrest with medical personnel present–n (%)

39 (12)

100 (100)

 Shockable rhythm–n (%)

177 (54)^a

21 (21)^a

 Adrenaline–n (%)

262 (80)

83 (83)

 Cardiac cause–n (%)

246 (75)

38 (38)

Characteristics on ICU admission

 GCS-M–median (IQR)

1 (1–2)^e

3 (1–5)^c

 Circulatory shock–n (%)

103 (31)

32 (32)

 Lactate–median (IQR)

8.7 (5.3–11.6)

6.7 (4.7–9.9)

 pH–median (IQR)

7.2 (7.0–7.3)

7.2 (7.0–7.3)^a

Outcome

 ICU length of stay, days–median (IQR)

3.1 (1.9–5.0)

3.2 (1.4–4.9)

 Hospital length of stay, days–median (IQR)

6.0 (3.0–12.0)^c

9.5 (4.0–20.8)^b

 WLST–n (%)

181 (55)

34 (34)^a

 WLST due to poor neurological prognosis–n (%)

159 (48)^d

26 (26)^b

 Mortality at 30 days–n (%)

214 (65)^a

46 (46)^c

 Mortality at 180 days–n (%)

221 (67)^a

53 (53)^c

 Time to follow-up, months–median (IQR)

4 (3–6)

6 (4–6)

 CPC at follow-up–n (%)

 CPC 1

69 (21)

24 (24)

 CPC 2

36 (11)

21 (21)

 CPC 3

2 (1)

3 (3)

 CPC 4

0 (0)

0 (0)

 CPC 5

221 (67)

52 (52)