Baseline characteristics of overall cohort and matched-pair group
| Variables | Overall cohort | Matched-pair group | ||||
| Non-CR | In-hospital CR | P value | Non-CR | In-hospital CR | P value | |
| (n=4742) | (n=8955) | (n=2441) | (n=2441) | |||
| Age (years), mean±SD | 66.2±11.9 | 66.2±12.4 | 0.69 | 66.0±12.2 | 66.4±12.1 | 0.19 |
| Male | 79.8% | 79.6% | 0.73 | 78.3% | 78.2% | 0.89 |
| BMI (kg/m2), mean±SD | 24.1±3.6 | 24.1±3.7 | 0.61 | 24.1±3.7 | 24.0±3.7 | 0.25 |
| Smoking | 58.7% | 58.3% | 0.64 | 58.3% | 58.0% | 0.79 |
| Comorbid conditions | ||||||
| Hypertension | 72.5% | 72.2% | 0.67 | 73.0% | 72.2% | 0.50 |
| Dyslipidaemia | 67.6% | 67.8% | 0.83 | 69.2% | 67.9% | 0.32 |
| Diabetes mellitus | 33.7% | 32.2% | 0.20 | 32.0% | 30.6% | 0.32 |
| Heart failure | 26.3% | 29.7% | <0.001 | 28.1% | 29.6% | 0.27 |
| Cerebrovascular disease | 3.3% | 3.8% | 0.13 | 3.3% | 3.2% | 0.81 |
| Peripheral artery disease | 5.1% | 3.3% | <0.001 | 4.3% | 4.1% | 0.77 |
| Killip class | ||||||
| I | 54.2% | 51.5% | 0.001 | 55.9% | 54.0% | 0.49 |
| II | 31.0% | 33.0% | 31.2% | 32.3% | ||
| III | 8.5% | 8.0% | 8.7% | 7.7% | ||
| IV | 6.3% | 7.5% | 6.4% | 6.0% | ||
| Length of hospital stay (days), median (IQR) | 13 (9–17) | 15 (12–20) | <0.001 | 13 (10–18) | 14 (10–18) | <0.001 |
| IABP | 6.2% | 13.6% | <0.001 | 9.4% | 9.5% | 0.73 |
| PCPS | 0.0% | 0.3% | 0.01 | 0.0% | 0.2% | 0.10 |
| Dialysis | 1.1% | 1.2% | 0.78 | 1.3% | 1.5% | 0.46 |
| Catecholamine | 21.9% | 36.8% | <0.001 | 33.0% | 33.3% | 0.54 |
| Diuretic | 25.2% | 43.5% | <0.001 | 37.7% | 37.6% | 0.57 |
| Medication at discharge | ||||||
| Aspirin | 66.6% | 95.9% | <0.001 | 91.5% | 90.0% | 0.06 |
| Clopidogrel | 64.5% | 91.9% | <0.001 | 87.7% | 86.7% | 0.30 |
| β-blocker | 37.1% | 59.3% | <0.001 | 52.4% | 51.9% | 0.71 |
| Statin | 55.4% | 81.5% | <0.001 | 76.2% | 75.7% | 0.66 |
| ACE-I/ARB | 49.1% | 75.7% | <0.001 | 69.0% | 67.5% | 0.24 |
ACE-I, angiotensin converting enzyme inhibitor; ARB, angiotensin receptor blocker; BMI, body mass index; CR, cardiac rehabilitation; IABP, intra-aortic balloon pumping; PCPS, percutaneous cardiopulmonary support; SD, standard deviation.