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Table 4 Multivariable Cox regression analysis of variables influencing survival in all patients and in the sub-group of patients with 3-vessel disease and at least two arterial grafts

From: How decisive is the number of distal arterial anastomoses in coronary bypass surgery?

  All Patients Sub-group
Predictor HR (95% CI) P Value HR (95% CI) P Value
Preoperative
Age 1.076 (1.069–1.082) 0.0001 1.079 (1.071–1.088) 0.0001
Male gender 0.836 (0.730–0.958) 0.010 0.870 (0.723–1.048) 0.339
Heart Failure NYHA ≥ 2 1.140 (1.074–1.209) 0.0001 1.194 (1.101–1.296) 0.0001
Diabetes 1.536 (1.331–1.774) 0.0001 1.634 (1.370–1.949) 0.0001
LV ejection fraction 0.981 (0.977–0.985) 0.0001 0.978 (0.973–0.983) 0.0001
Intraoperative
Complete revascularization 0.929 (0.840–1.028) 0.154 0.936 (0.822–1.065) 0.314
Number arterial anastomoses 0.899 (0.828–0.975) 0.011 0.878 (0.793–0.973) 0.013
Number arterial grafts 1.039 (0.924–1.169) 0.522 1.136 (0.965–1.336) 0.126
Other dependent covariates
Sequential ITA 0.879 (0.784–0.987) 0.029 0.832 (0.737–0.939) 0.003
Both ITA 0.951 (0.818–1.105) 0.512 1.103 (0.824–1.477) 0.510
GEA Graft 0.982 (0.819–1.179) 0.849 0.978 (0.850–1.126) 0.759
  1. HR Hazard ratio, CI Confidence interval, NYHA New York heart association, LV Left ventricular, ITA Internal thoracic artery, GEA Gastroepiploic artery