1.
Baseline and admission characteristics.
| Variable | Total | PCI group | OMT group | P-value |
| Data are presented as means ± SD or %. *Presented as median (interquartile range). BMI: body mass index; CABG: coronary artery bypass grafting; OMT: optimized medical treatment; PCI: percutaneous coronary intervention. | ||||
| Baseline characteristics | ||||
| Age, yrs | 87 ± 2 | 87 ± 2 | 87 ± 2 | 0.685 |
| Male gender | 55.9% | 54.0% | 60.9% | 0.267 |
| BMI, kg/m2 | 26.1 ± 3.6 | 25.8 ± 3.4 | 26.9 ± 3.8 | 0.033 |
| Hypertension | 87.5% | 86.4% | 90.7% | 0.300 |
| Dyslipidaemia | 59.0% | 58.8% | 59.5% | 0.905 |
| Diabetes mellitus | 33.4% | 29.6% | 43.7% | 0.018 |
| Active smoker | 1.3% | 1.3% | 1.2% | 0.940 |
| Previous myocardial infarction | 28.5% | 27.7% | 31.0% | 0.566 |
| Previous PCI | 15.6% | 16.6% | 12.9% | 0.426 |
| Previous CABG | 7.2% | 6.4% | 9.4% | 0.349 |
| Previous stroke | 12.2% | 9.4% | 20.0% | 0.011 |
| Peripheral arterial disease | 5.4% | 4.7% | 7.1% | 0.403 |
| Atrial fibrillation | 12.1% | 9.8% | 18.4% | 0.036 |
| Dementia | 2.2% | 0.9% | 6.0% | 0.007 |
| Chronic kidney disease | 12.9% | 14.1% | 9.4% | 0.268 |
| Chronic obstructive pulmonary disease | 9.7% | 8.9% | 11.9% | 0.430 |
| Previous major bleeding | 2.6% | 1.7% | 4.9% | 0.121 |
| Admission characteristics | ||||
| Killip class Ⅰ | 75.7% | 75.3% | 76.7% | 0.792 |
| Killip class Ⅳ | 0.3% | 0.4% | 0 | 0.545 |
| Haemoglobin, g/dL | 12.6 ± 1.6 | 12.4 ± 1.6 | 13.1 ± 1.8 | 0.296 |
| Platelet count, ×103/mm3 | 201 (163.5-251.5)* | 196 (161-243)* | 208 (176-258.5)* | 0.045 |
| Creatinine, mg/dL | 1.0 (1.0-1.2)* | 1.0 (1.0-1.3)* | 1.0 (0.9-1.0)* | 0.393 |