Table 1. Comparison of baseline data and laboratory parameters between training set and validation set in AMI patients.
| Variables | Training set | Validation set | t/χ2 Value | P-Value |
| Age (years) | 61.74±13.6 | 59.66±14.8 | 1.733 | 0.084 |
| Gender (Female, n%) | 242 (80.1) | 201 (79.4) | 0.04 | 0.841 |
| BMI (kg/m2) | 24.63±3.62 | 24.53±3.56 | 0.315 | 0.753 |
| Diabetes (n%) | 81 (26) | 52 (20.1) | 3.956 | 0.077 |
| Hypertension (n%) | 175 (56.3) | 141 (55.7) | 0.016 | 0.898 |
| Smoking (n%) | 189 (60.8) | 144 (56.9) | 0.857 | 0.355 |
| SBP (mmHg) | 122.44±24.08 | 125.88±32.12 | 2.689 | 0.574 |
| DBP (mmHg) | 78.36±15.04 | 79.45±15.43 | 3.945 | 0.683 |
| Killip grade II-IV (n%) | 87 (28) | 51 (20.2) | 4.612 | 0.032 |
| Neutrophils (×109/L) | 8.6±5.7 | 8.12±3.91 | 1.148 | 0.251 |
| Lymphocytes (×109/L) | 1.78±1.16 | 1.63±0.93 | 1.717 | 0.087 |
| RBC (×109/L) | 4.49±0.64 | 4.54±0.65 | 1.059 | 0.29 |
| Hemoglobin (g/L) | 136.68±19.66 | 138.51±20.83 | 1.068 | 0.286 |
| Platelets (×109/L) | 205.48±63.8 | 215.82±67.23 | 1.869 | 0.062 |
| Urea (mmol/L) | 5.95±2.42 | 6.05±2.55 | 0.466 | 0.641 |
| Creatinine (μmol/L) | 86.04±34.31 | 87.22±61.95 | 2.57 | 0.513 |
| Uric acid (umol/L) | 361.9±102 | 363.73±109.23 | 0.206 | 0.837 |
| Albumin (g/L) | 40.93±3.95 | 40.69±3.96 | 5.233 | 0.898 |
| ALT (μl) | 62.84±87.67 | 55.4±115.39 | 0.87 | 0.385 |
| AST (μl) | 238.75±306.77 | 247.34±273.48 | 2.724 | 0.324 |
| CK (μl) | 1906.93±1804.18 | 1975.97±1831.45 | 0.449 | 0.654 |
| LDH (μl) | 697.15±504.41 | 713.38±517.3 | 0.376 | 0.707 |
| Direct bilirubin (μmol/L) | 5.35±2.62 | 5.55±2.86 | 3.455 | 0.708 |
| Indirect bilirubin (μmol/L) | 14.16±6.75 | 13.03±6.91 | 1.959 | 0.051 |
| Triglycerides (mmol/L) | 2.14±6.11 | 2.15±1.64 | 0.024 | 0.981 |
| Total cholesterol (mmol/L) | 4.51±1.06 | 4.39±1.8 | 2.626 | 0.309 |
| LDL-C (mmol/L) | 2.91±0.89 | 2.8±1.09 | 3.692 | 0.692 |
| HDL-C (mmol/L) | 1.1±0.25 | 1.1±2.59 | 0.02 | 0.984 |
| LVEFb | 56.69±10.41 | 58.02±7.72 | 1.688 | 0.092 |
| Gensini scoreb | 79.5±19.84 | 74.5±19.99 | 2.966 | 0.003 |
| D-to-B time | 61.23±7.88 | 62.5±7.22 | 1.986 | 0.047 |
| Infarct location (n, %) | 0.351 | 0.553 | ||
| Anterior MI | 159 (51.1) | 123 (48.6) | ||
| Others | 152 (48.9) | 130 (51.4) | ||
| Number of diseased vessels (n, %) | 0.099 | 0.753 | ||
| 1 | 114 (36.7) | 96 (37.9) | ||
| ≥2 | 197 (63.3) | 157 (62.1) |
BMI, Body mass index; SBP, Systolic blood pressure; DBP, Diastolic blood pressure; RBC, Red blood cell; ALT, Alanine aminotransferase; AST, Aspartate aminotransferase; CK, Creatine kinase; LDH, Lactate dehydrogenase; HDL-C, High-density lipoprotein C; LDL-C, Low-density lipoprotein C; LVEF, Left ventricular ejection fraction.