Table 2. Clinical characteristics of the study population according to cutoff of MMP-9.
| Variables | MMP-9<=398.2ng/ml (n=75) | MMP-9>398.2ng/ml (n=80) | X2/t/z | P value |
|---|---|---|---|---|
| Male, n (%) | 51 (68.0) | 60 (63.8) | 2.299 | 0.129 |
| Age (year) | 58±11 | 61±11 | 1.362 | 0.175 |
| BMI (kg/m2) | 24.4±2.8 | 25.5±4.1 | 1.870 | 0.063 |
| Diabetes mellitus, n (%) | 21 (28.0) | 22 (27.5) | 0.004 | 0.945 |
| Hypertension, n (%) | 41 (54.6) | 35 (43.8) | 1.846 | 0.174 |
| Current smoking, n (%) | 39 (52.0) | 50 (62.5) | 1.746 | 0.186 |
| MPV (fL) | 10.5±1.3 | 10.3±1.1 | 0.904 | 0.367 |
| Glucose (mmol/L) | 8.8±3.5 | 10.1±4.5 | 1.806 | 0.073 |
| Creatinine (mg/dL) | 72.6 (64.6∼91.0) | 75.5 (63.8∼86.8) | 0.306 | 0.759 |
| BNP (pmol/L) | 532 (186∼1288) | 447(146∼1046) | 0.378 | 0.705 |
| Troponin I (mmol/l) | 8.1 (0.9∼30.4) | 8.6 (1.8∼22.1) | 0.019 | 0.985 |
| GRACE score | 117±23 | 122±27 | 1.208 | 0.228 |
| Low-risk group, n (%) | 30 (40.0) | 27 (33.7) | 1.999 | 0.368 |
| Moderate -risk group, n (%) | 33 (44.0) | 33 (42.3) | ||
| High-risk group, n (%) | 12 (16.0) | 20 (25.0) | ||
| EF (%) | 57±7 | 57±8 | 0.102 | 0.918 |
| EF <50%, n (%) | 10 (12.8) | 13 (17.1) | 0.556 | 0.456 |
| WMIS | 1.17±0.11 | 1.21±0.10 | 2.392 | 0.018 |
| Gensini score | 65±35 | 57±34 | 1.223 | 0.223 |
| No-Reflow, n (%) | 12 (16.0) | 25 (31.3) | 4.954 | 0.026 |
| Fatality in hospital, n (%) | 4 (5.3) | 20 (25.0) | 11.441 | 0.001 |
GRACE score groups: low-risk group≤108; moderate-risk group (109-140); and high-risk group >140;WMIS, left ventricle wall motion score index.