Table 3

Comparison of clinical baseline data between training set and test set

VariablesTraining (n=476)Testing (n=225)P value
Age, years (mean±SD)61.1±3.5260.7±3.370.19
Sex, female, n (%)45.3144.730.26
Current smoker, n (%)51.2552.160.15
Diabetes mellitus34.7132.320.24
Hypertension, n (%)50.1337.580.03*
Dyslipidaemia, n (%)41.6239.280.39
History of CHD (%)28.4827.730.43
Family history of CAD, n (%)2.151.940.37
S2FMC ≤3 hours, n (%)29.9131.140.26
TIMI score, n (%)
 High risk (5–7)25.3026.100.46
 Medium risk (3–4)70.5069.900.23
 Low risk (0–2)4.204.000.18
NYHA, n (%)
 Ⅰ78.8065.300.01*
 Ⅱ13.7027.200.02*
 Ⅲ6.506.300.53
 Ⅳ1.001.200.42
CAG, n (%)
 CAG (+), n (%)92.5592.900.58
 CAG (−), n (%)7.457.100.27
RWMA, n (%)
 RWMA (+), n (%)43.5345.170.29
 RWMA (–), n (%)56.4754.830.33
 LVEF58.65±5.8459.17±4.530.38
 FS (%)32.4831.930.49
  • *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.