Table 1.
Demographics and clinical characteristics of the study population
| N=7755 | |
|---|---|
| Patients | |
| Age (years) | 66 (57–74) |
| Male (%) | 5872 (75.7) |
| Job (%) | 3364 (48.2) |
| BMI (kg/m2) | 23.4 (21.4–25.7) |
| Cardiovascular risk factors | |
| Smoker (%) | 4865 (63.9) |
| Drinker (%) | 3321 (45.3) |
| Diabetes (%) | 2586 (33.4) |
| Hypertension (%) | 4424 (58.9) |
| Dyslipidaemia (%) | 3259 (44.1) |
| Previous MI (%) | 983 (13.0) |
| Angina pectoris (%) | 1737 (23.4) |
| Multivessel disease (%) | 2790 (38.4) |
| Collateral circulation (%) | 2576 (35.7) |
| Clinical presentation | |
| Onset admission time <24 h (%) | 6804 (89.1) |
| KILLIP ≥II (%) | 1331 (18.0) |
| Initial TIMI ≤II (%) | 4759 (68.4) |
| STEMI (%) | 6567 (86.0) |
| Laboratory data on admission | |
| Blood glucose level (mg/dL) | 152 (122–209) |
| HDL cholesterol (mg/dL) | 44 (37–53) |
| LDL cholesterol (mg/dL) | 121 (99–147) |
| Triglycerides (mg/dL) | 92 (58–142) |
| HbA1c (%) | 5.9 (5.5–6.9) |
| Peak CK (IU/L) | 2147 (1069–4006) |
| eGFR (mL/min/1.73 m2) | 64.5 (49.2–80.9) |
| Localisation of MI | |
| LAD | 3050 (41.7) |
| RCA | 2447 (33.4) |
| LCX | 998 (13.6) |
| LMT | 164 (2.2) |
Categorical variables are presented as number (%), and continuous variables are presented as quartile. Laboratory data were measured on admission. Smoker was defined as a patient with a smoking history, and drinker was defined as an active drinker. Number (%) of localisation of MI was calculated out of 7319 patients who underwent coronary angiography.
BMI, body mass index; CK, creatine kinase; eGFR, estimated glomerular filtration rate; HbA1c, glycated haemoglobin; HDL, high-density lipoprotein; LAD, left anterior descending artery; LCX, left circumflex artery; LDL, low-density lipoprotein; LMT, left main trunk; MI, myocardial infarction; RCA, right coronary artery; STEMI, ST-elevation myocardial infarction.