Table 1: Demographic characteristics of study subjects
| Upstream group(n=220) | Downstream group (n=258) | P value | |
| Age (years) | 57.6 ± 8.7 | 57.8 ± 8.6 | 0.78 |
| Male | 159(72.3) | 183(70.9) | 0.75 |
| Weight (kg) | 71.4 ± 11.3 | 71.3 ± 10.3 | 0.93 |
| Height (cm) | 167.7 ± 7.3 | 166.9 ± 7.4 | 0.26 |
| BMI (kg/m2) | 25.3 ± 3.1 | 25.6 ± 2.9 | 0.42 |
| Hypertension | 135(61.4) | 166(64.3) | 0.50 |
| Diabetes | 70(31.8) | 60(23.3) | 0.04 |
| Hyperlipidemia | 58(26.4) | 78(30.2) | 0.35 |
| Smoking | 116(52.7) | 142(55.0) | 0.78 |
| Hematocrit (%) | 40.8 ± 8.8 | 42.3 ± 11.8 | 0.13 |
| Hemoglobin (g/L) | 136.6 ± 19.4 | 138.3 ± 19.7 | 0.36 |
| Platelet count(×109/L) | 215.1 ± 63.6 | 219.5 ± 65.5 | 0.46 |
| Admission diagnosis | 0.86 | ||
| NSTEMI | 69(31.4) | 79(30.6) | |
| UAP | 151(68.6) | 179(69.4) | |
| Lesion type | 0.29 | ||
| A | 20(10.4) | 28(11.7) | |
| B | 129(66.8) | 143(59.6) | |
| C | 44(22.8) | 69(28.7) |