Comparison of clinical baseline data between training set and test set
| Variables | Training (n=476) | Testing (n=225) | P value |
| Age, years (mean±SD) | 61.1±3.52 | 60.7±3.37 | 0.19 |
| Sex, female, n (%) | 45.31 | 44.73 | 0.26 |
| Current smoker, n (%) | 51.25 | 52.16 | 0.15 |
| Diabetes mellitus | 34.71 | 32.32 | 0.24 |
| Hypertension, n (%) | 50.13 | 37.58 | 0.03* |
| Dyslipidaemia, n (%) | 41.62 | 39.28 | 0.39 |
| History of CHD (%) | 28.48 | 27.73 | 0.43 |
| Family history of CAD, n (%) | 2.15 | 1.94 | 0.37 |
| S2FMC ≤3 hours, n (%) | 29.91 | 31.14 | 0.26 |
| TIMI score, n (%) | |||
| High risk (5–7) | 25.30 | 26.10 | 0.46 |
| Medium risk (3–4) | 70.50 | 69.90 | 0.23 |
| Low risk (0–2) | 4.20 | 4.00 | 0.18 |
| NYHA, n (%) | |||
| Ⅰ | 78.80 | 65.30 | 0.01* |
| Ⅱ | 13.70 | 27.20 | 0.02* |
| Ⅲ | 6.50 | 6.30 | 0.53 |
| Ⅳ | 1.00 | 1.20 | 0.42 |
| CAG, n (%) | |||
| CAG (+), n (%) | 92.55 | 92.90 | 0.58 |
| CAG (−), n (%) | 7.45 | 7.10 | 0.27 |
| RWMA, n (%) | |||
| RWMA (+), n (%) | 43.53 | 45.17 | 0.29 |
| RWMA (–), n (%) | 56.47 | 54.83 | 0.33 |
| LVEF | 58.65±5.84 | 59.17±4.53 | 0.38 |
| FS (%) | 32.48 | 31.93 | 0.49 |
*Comparison of basic clinical baseline data of training set and test set (p<0.05).
CAG, coronary angiography; CHD, coronary artery disease; FS, left ventricular fractional shortening; LVEF, left ventricular ejection fraction; NYHA, New York Heart Association; RWMA, regional wall motion abnormality; S2FMC, symptom to first medical contact; TIMI, Thrombolysis in Myocardial Infarction.