Baseline demographics of study population and patients who survived with cerebral performance category (CPC) 1–2
| All patients (n=129) | Survival with CPC 1–2 (n=39) | P values | |
| Age group | |||
| 19–55 years | 38 (29.46%) | 18 (46.15%) | Ref |
| >55–65 years | 38 (29.46%) | 13 (33.33%) | 0.245 |
| >65–75 years | 34 (26.36%) | 6 (15.38%) | 0.010 |
| >75 years | 19 (14.73%) | 2 (5.13%) | 0.013 |
| Female | 28 (21.71%) | 9 (23.08%) | 0.804 |
| Race | |||
| Chinese | 92 (71.32%) | 27 (69.23%) | Ref |
| Malay | 10 (7.75%) | 3 (7.69%) | 0.966 |
| Indian | 10 (7.75%) | – | |
| Others | 17 (13.18%) | 9 (23.08%) | 0.064 |
| Body mass index | |||
| <18.5 | 18 (13.95%) | 9 (23.08%) | 0.487 |
| 18.5–22.9 | 23 (17.83%) | 9 (23.08%) | Ref |
| 23–26.9 | 48 (37.21%) | 12 (30.77%) | 0.226 |
| ≥27 | 40 (31.01%) | 9 (23.08%) | 0.164 |
| Hypertension | 79 (61.24%) | 20 (51.28%) | 0.129 |
| Diabetes mellitus | 44 (34.11%) | 9 (23.08%) | 0.085 |
| History of stroke | 50 (38.76%) | 14 (35.90%) | 0.661 |
| ≥Stage 3 chronic kidney disease | 65 (50.39%) | 15 (38.46%) | 0.077 |
| End-stage renal failure requiring dialysis | 7 (5.43%) | 3 (7.69%) | 0.460 |
| Known history of ischaemic heart disease | 52 (40.31%) | 11 (28.21%) | 0.068 |
| Dementia | 1 | 0 | – |
| Connective tissue disease | 1 | 0 | – |
| Peptic ulcer disease | 11 (8.53%) | 2 (5.13%) | 0.372 |
| Chronic respiratory disease | 28 (21.71%) | 9 (23.08%) | 0.804 |
| Liver disease | 31 (24.03%) | 7 (17.95%) | 0.290 |
| Cancer | 3 (2.33%) | 0 | NA |
| Age-adjusted Charlson Ccomorbidity Index (CCI) | 4.10±2.39.68%) | 2.61±1.85 | |
| CCI 0–2 | 35 (27.13%) | 21 (53.85%) | Ref |
| CCI 3–5 | 57 (44.19%) | 15 (38.46%) | 0.059 |
| CCI >5 | 37 (28.68%) | 3 (7.69%) | <0.001 |
| Presence of bystander cardiopulmonary resuscitation | 64 (49.61%) | 26 (66.67%) | 0.0012 |
| Time to return of spontaneous circulation (min) | 38.14±22.87 | 24.15±16.66 | <0.001 |
| Time to first return of spontaneous circulation (min) | |||
| 0–10 | 12 (9.30%) | 7 (17.95%) | Ref |
| >10–20 | 21 (16.28%) | 15 (38.46%) | 0.445 |
| >20–30 | 26 (20.16%) | 8 (20.51%) | 0.113 |
| >30–40 | 20 (15.50%) | 6 (15.38%) | 0.120 |
| >40–50 | 20 (15.50%) | 1 (2.56%) | 0.005 |
| >50–60 | 14 (10.85%) | 0 | – |
| >60 | 16 (12.40%) | 2 (5.13%) | 0.017 |
| Ventricular tachycardia/ventricular fibrillation collapse | 74 (57.36%) | 31 (79.49%) | 0.001 |
| Collapse due to myocardial infarction | 90 (69.77%) | 27 (69.23%) | 0.930 |
| Went for direct coronary catheterisation | 84 (66.14%) | 29 (74.36%) | 0.195 |
| Targeted temperature management | 69 (53.49%) | 28 (71.79%) | 0.007 |