Univariate and multivariate analysis of factors associated with survival with cerebral performance category (CPC) 1–d 2
| Univariate logistic regression | Multivariate logistic regression | |||
| OR (95% CI) | P values | OR (95% CI) | P values | |
| Age <65 years | 3.87 (1.61 to 9.34) | 0.003 | – | – |
| Female | 1.12 (0.45 to 2.76) | 0.804 | – | – |
| Race | ||||
| Chinese | 1.0 | Ref | – | – |
| Malay | 1.03 (0.25 to 4.29) | 0.966 | ||
| Indian | 1.0 | NS | ||
| Others | 2.71 (0.94 to 7.76) | 0.064 | ||
| Body mass index | ||||
| <18.5 | 1.94 (0.59 to 6.35) | 0.271 | – | – |
| 18.5–25 | 1.0 | |||
| >25 | 0.66 (0.25 to 1.73) | 0.399 | ||
| Hypertension | 0.55 (0.26 to 1.19) | 0.129 | – | – |
| Diabetes mellitus | 0.47 (0.20 to 1.11) | 0.085 | – | – |
| History of stroke | 0.84 (0.38 to 1.83) | 0.661 | – | – |
| ≥Stage 3 chronic kidney disease | 0.50 (0.23 to 1.08) | 0.077 | – | – |
| End-stage renal failure requiring dialysis | 1.79 (0.38 to 8.41) | 0.460 | – | – |
| Known history of ischaemic heart disease | 0.47 (0.21 to 1.06) | 0.068 | – | – |
| Age-adjusted Charlson Comorbidity Index ≤5 | 7.28 (2.08 to 25.49) | 0.002 | 5.14 (1.33 to 19.89) | 0.018 |
| Presence of bystander cardiopulmonary resuscitation | 2.74 (1.25 to 6.01) | 0.012 | 2.84 (1.09 to 7.40) | 0.033 |
| Time to first return of spontaneous circulation ≤40 min | 7.01 (2.95 to 16.67) | <0.001 | 6.92 (4.93 to 16.47) | <0.001 |
| Ventricular tachycardia/ventricular fibrillation collapse | 4.23 (1.76 to 10.21) | 0.001 | 2.59 (1.04 to 7.19) | 0.048 |
| Collapse due to myocardial Infarction | 0.96 (0.43 to 2.18) | 0.930 | – | – |
| Went for direct coronary catheterisation | 1.74 (0.75 to 4.02) | 0.195 | – | – |
| Underwent targeted temperature management | 3.04 (1.35 to 6.85) | 0.007 | 2.60 (0.97 to 6.96) | 0.057 |
The nomogram to aid simple clinical application is shown in table 3.