Table 1. Baseline Characteristics of Acute Coronary Syndrome Cohorts and the Control Group.
| Variables | Control cohort (n=55040) | UA cohort (n=49475) | MI cohort (n=5565) | p | ||
|---|---|---|---|---|---|---|
| Continuous variables | ||||||
| Age (yr) | 64.0±9.0 | 64.3±9.0 | 64.0±13.3 | <0.001 | ||
| BMI (kg/m2) | 23.55±17.39 | 24.77±3.02 | 24.58±3.00 | <0.001 | ||
| Systolic BP (mm Hg) | 131.13±18.72 | 128.79±16.48 | 128.68±17.00 | <0.001 | ||
| Total cholesterol (mg/dL) | 197.76±46.63 | 174.64±45.26 | 185.91±49.33 | <0.001 | ||
| HDL-C (mg/dL) | 55.14±14.96 | 49.15±19.92 | 47.55±13.76 | <0.001 | ||
| LDL-C (mg/dL) | 105.96±37.06 | 93.55±44.33 | 106.15±52.19 | <0.001 | ||
| Categorical variables | ||||||
| Age group (yr) | ||||||
| <65 | 25813 (46.9) | 22683 (45.8) | 3130 (56.2) | <0.001 | ||
| ≥65 | 29227 (53.1) | 26792 (54.2) | 2435 (43.8) | <0.001 | ||
| Male sex | 38950 (70.7) | 34496 (69.7) | 4453 (80.0) | <0.001 | ||
| Smoking | ||||||
| None | 33579 (61.0) | 26158 (52.8) | 2443 (43.8) | <0.001 | ||
| Former | 5739 (10.4) | 12836 (25.9) | 1351 (24.3) | <0.001 | ||
| Current | 15725 (28.6) | 8306 (21.3) | 1575 (31.9) | <0.001 | ||
| Alcohol consumption | ||||||
| No | 31899 (57.9) | 32404 (65.4) | 3534 (63.5) | <0.001 | ||
| Yes | 23141 (42.1) | 17071 (34.6) | 2031 (36.5) | <0.001 | ||
| Income | ||||||
| Upper | 9470 (17.2) | 7193 (14.5) | 903 (16.2) | <0.001 | ||
| Middle upper | 10433 (18.9) | 7067 (14.2) | 834 (14.9) | <0.001 | ||
| Middle lower | 12111 (22.0) | 10667 (21.6) | 1321 (23.7) | <0.001 | ||
| Lower | 23026 (41.9) | 23463 (49.7) | 2399 (45.2) | <0.001 | ||
| Atrial fibrillation | 44 (0.001) | 266 (0.005) | 11 (0.001) | <0.001 | ||
| Hypertension | 10395 (18.8) | 45899 (92.7) | 4635 (83.2) | <0.001 | ||
| Diabetes mellitus | 7198 (13.0) | 37330 (75.4) | 3530 (63.4) | <0.001 | ||
| Dyslipidemia | 630 (1.14) | 46686 (94.3) | 4846 (87.1) | <0.001 | ||
UA, unstable angina; MI, myocardial infarction; BMI, body mass index; BP, blood pressure; HDL-C, high-density lipoprotein-cholesterol; LDL-C, low-density lipoprotein-cholesterol.
Data are presented as mean±standard deviation or n (%).