TABLE 3.
Univariable Cox proportional hazards regression analysis of death.
| Variables | Hazard ratio | P-value |
| Cluster | 1.513 (1.093–2.094) | 0.02* |
| Female | 1.359 (0.883–2.092) | 0.162 |
| Age at definitive surgery | 0.972 (0.906–1.043) | 0.418 |
| History | 0.922 (0.128–6.626) | 0.935 |
| Surgical strategy | 1.112 (0.847–1.458) | 0.448 |
| BMI | 1.004 (0.955–1.056) | 0.874 |
| LVEF | 0.983 (0.967–1.000) | 0.079 |
| TOF | 0.492 (0.246–0.983) | 0.028* |
| VSD | 0.533 (0.335–0.847) | 0.011* |
| ASD | 1.378 (0.89–2.135) | 0.155 |
| PDA | 1.186 (0.704–1.999) | 0.516 |
| PFO | 0.748 (0.459–1.217) | 0.232 |
| RVH | 1.066 (0.674–1.688) | 0.785 |
| ACA | 0.888 (0.573–1.375) | 0.593 |
| HRH | 1.14 (0.497–2.617) | 0.761 |
| SV | 2.841 (1.571–5.14) | 0.002* |
| Dextrocardia | 1.966 (1.015–3.808) | 0.066 |
| CA | 3.932 (1.966–7.867) | 0.001* |
| LSVC | 2.179 (1.328–3.574) | 0.004* |
| PAS | 0.733 (0.297–1.81) | 0.48 |
| RAA | 1.106 (0.51–2.399) | 0.801 |
| TR/TI | 1.106 (0.622–1.964) | 0.735 |
| TS | 0.384 (0.053–2.761) | 0.261 |
| TA | 0.366 (0.051–2.63) | 0.234 |
| DTV | 2.094 (0.767–5.719) | 0.195 |
| MA | 6.772 (1.661–27.608) | 0.04* |
| HLH | 1.476 (0.205–10.607) | 0.716 |
| LVH | 2.521 (0.351–18.114) | 0.424 |
| AAC | 4.477 (2.057–9.746) | 0.002* |
| ASOCS | 3.681 (1.842–7.356) | 0.002* |
| ACD/ECD | 3.149 (1.45–6.835) | 0.013* |
| AAVM | 4.133 (1.9–8.987) | 0.003* |
*P-value < 0.05 was considered statistically significant. LVEF, left ventricular ejection fraction; TOF, tetralogy of Fallot; VSD, ventricular septal defect; ASD, atrial septal defect; PDA, patent ductus arteriosus; POF, patent foramen ovale; RVH, right ventricular hypertrophy; ACA, aortopulmonary collateral arteries; HRH, hypoplastic right heart; SV, single ventricle; CA, common atrium; LSVC, persistent left superior vena cava; PAS, pulmonary artery stenosis; RAA, right aortic arch; TR/TI, tricuspid regurgitation/tricuspid insufficiency; DTV, dysplastic tricuspid valve; TS, tricuspid stenosis; TA, tricuspid atresia; MA, mitral atresia; HLH, hypoplastic left heart; LVH, Left ventricular hypertrophy; AAC, abnormal atrioventricular connection; ASOCS, abnormal spatial orientation of the cardiac segments; ACD/ECD, atrioventricular canal defect/Endocardial cushion defect; AAVM, abnormal atrioventricular valve morphology.