Table 3 Multivariate logistic regression analysis and Stepwise regression analysis of involved variables in modeling group
Variables | Multivariable logistic regression | Stepwise regression | P value | |
|---|---|---|---|---|
OR (95%CI) | P value | OR (95%CI) | ||
age, (years) | 1.037 (1.012–1.064) | 0.005 | 1.037 (1.014–1.062) | 0.002 |
heart rate, (beats/minute) | 1.026 (1.012–1.040) | < 0.001 | 1.027 (1.014–1.040) | < 0.001 |
systolic blood pressure | Â | Â | Â | Â |
 < 90 mmHg | 3.587 (0.945–12.147) | 0.047 | 4.529 (1.197–15.036) | 0.017 |
 > 140 mmHg | 1.273 (0.705–2.281) | 0.418 | 1.269 (0.716–2.232) | 0.41 |
pro-brain natriuretic peptide | Â | Â | Â | Â |
 500–15,000 ng/L | 1.565 (0.720–3.630) | 0.273 | 1.62 (0.774–3.649) | 0.218 |
 > 15,000 ng/L | 2.493 (0.869–7.344) | 0.092 | 3.046 (1.167–8.203) | 0.024 |
 troponin T, (ng/mL) | 1.067 (0.927–1.213) | 0.341 | 1.133 (0.996–1.232) | 0.047 |
creatine kinase isoenzyme | Â | Â | Â | Â |
 25-150 ng/ml | 0.692 (0.365–1.299) | 0.252 | NA | NA |
  > 150 ng/ml | 1.280 (0.447–3.405) | 0.632 | NA | NA |
 aspartate aminotransferase, (U/L) | 1.000 (1.000–1.001) | 0.701 | NA | NA |
creatinine | Â | Â | Â | Â |
 100-200 μmol/L | 1.603 (0.843–2.974) | 0.140 | NA | NA |
 201-400 μmol/L | 1.509 (0.287–5.918) | 0.588 | NA | NA |
  > 400 μmol/L | 3.258 (0.563–15.519) | 0.153 | NA | NA |
hematocrit | Â | Â | Â | Â |
  < 0.3 L/L | 1.137 (0.401–2.853) | 0.796 | NA | NA |
  > 0.45 L/L | 1.059 (0.427–2.402) | 0.895 | NA | NA |
white blood cell (×109/L) | 1.023 (0.956–1.090) | 0.489 | NA | NA |
C-reactive protein | Â | Â | Â | Â |
 30-80 mg/L | 0.844 (0.383–1.756) | 0.661 | NA | NA |
  > 80 mg/L | 1.053 (0.376–2.658) | 0.917 | NA | NA |
left ventricular ejection fraction, (%) | 0.960 (0.936–0.984) | 0.001 | 0.96 (0.937–0.984) | < 0.001 |