Independent predictors of discharge against medical advice
| Variable | OR (95% CI) | P values |
| Age | 0.97 (0.96 to 0.97) | <0.001 |
| Male sex | 1.92 (1.81 to 2.03) | <0.001 |
| Diagnosis of STEMI | 1.16 (1.09 to 1.23) | <0.001 |
| Primary expected payer versus Medicare | ||
| Medicaid | 1.30 (1.20 to 1.41) | <0.001 |
| Private | 0.40 (0.36 to 0.43) | <0.001 |
| Uninsured | 1.13 (1.03 to 1.24) | 0.008 |
| Other | 0.86 (0.76 to 0.98) | 0.021 |
| Median household income versus the 0–25th centile | ||
| 26–50th | 0.89 (0.84 to 0.95) | 0.001 |
| 51–75th | 0.88 (0.82 to 0.95) | 0.001 |
| 76–100th | 0.84 (0.77 to 0.91) | <0.001 |
| Smoking | 1.66 (1.57 to 1.75) | <0.001 |
| Alcohol misuse | 1.49 (1.35 to 1.63) | <0.001 |
| Dyslipidaemia | 0.65 (0.61 to 0.68) | <0.001 |
| Hypertension | 1.10 (1.04 to 1.17) | <0.001 |
| Diabetes mellitus | 1.13 (1.08 to 1.20) | <0.001 |
| Obesity | 0.88 (0.82 to 0.95) | 0.001 |
| Heart failure | 0.72 (0.52 to 1.00) | 0.049 |
| Coronary artery disease | 0.79 (0.74 to 0.84) | <0.001 |
| Previous myocardial infarction | 1.27 (1.18 to 1.36) | <0.001 |
| Previous PCI | 1.25 (1.18 to 1.36) | <0.001 |
| Previous CABG | 0.92 (0.85 to 1.00) | 0.049 |
| Atrial fibrillation | 0.83 (0.77 to 0.89) | 0.24 |
| Chronic lung disease | 1.14 (1.08 to 1.21) | <0.001 |
| Renal failure | 0.79 (0.73 to 0.85) | <0.001 |
| Liver disease | 0.86 (0.74 to 0.85) | 0.046 |
| Anaemia | 0.86 (0.80 to 0.92) | <0.001 |
| Cancer | 0.67 (0.57 to 0.78) | <0.001 |
| Depression | 0.87 (0.79 to 0.96) | 0.004 |
| Dementia | 0.69 (0.58 to 0.81) | <0.001 |
| Bed size versus small | ||
| Medium | 1.20 (1.06 to 1.35) | 0.004 |
| Urban location | 1.15 (1.02 to 1.30) | 0.022 |
| Teaching hospital | 0.81 (0.76 to 0.87) | <0.001 |
| Receipt of ventilation | 1.48 (1.25 to 1.75) | <0.001 |
| Drug-eluting stent | 0.57 (0.52 to 0.63) | <0.001 |
| Ventricular fibrillation | 0.59 (0.47 to 0.74) | <0.001 |
| Receipt of angiogram | 0.18 (0.17 to 0.19) | <0.001 |
| Receipt of PCI | 0.57 (0.52 to 0.63) | <0.001 |
| Receipt of CABG | 0.11 (0.08 to 0.13) | <0.001 |
| Receipt of ICD/pacemaker | 0.27 (0.18 to 0.40) | <0.001 |
| Receipt of thrombolysis | 1.22 (1.01 to 1.47) | 0.043 |
Acute kidney injury, major bleeding and blood transfusions were not included in the analysis because there were too few events.
CABG, coronary artery bypass graft; ICD, implantable cardioverter defibrillator; PCI, percutaneous coronary intervention; STEMI, ST elevation myocardial infarction