b'Scientific Session Abstracts SUNDAY APRIL 21, 2024 Table I. Multivariable Logistic Regression Model indicating Technical andPerioperative Characteristics Associated with Early Graft Thrombosis afterLower Extremity Arterial Bypass Surgery.Perioperative Characteristic OR (95% CI) P-ValueAge 0.99 (0.98-0.99) 0.001Female Gender 1.32 (1.20-1.45) 0.001White Race 1.10 (1.00-1.22) 0.059Diabetes 0.83 (0.75-0.92) 0.001Dialysis 1.02 (0.93-1.13) 0.638CHF 1.03 (0.89-1.18) 0.731Prior CABG 0.87 (0.79-0.96) 0.008COPD 0.94 (0.83-1.05) 0.266Smoking 0.82 (0.73-0.93) 0.002Aspirin 0.73 (0.66-0.81) 0.001Statin 0.85 (0.77-0.95) 0.003Baseline Hemoglobin 0.92 (0.90-0.95) 0.001BMI 1.00 (0.99-1.01) 0.835Bypass TypeFemoral to Above Knee Popliteal 1 (reference) -Femoral to Below Knee Popliteal 1.62 (1.30-2.03) 0.001Femoral to Tibial Vessel 3.18 (2.58-3.90) 0.001Femoral to Ankle Vessel 4.41 (3.28-5.93) 0.001Popliteal to Tibial Vessel 2.58 (1.98-3.37) 0.001Popliteal to Ankle Vessel 3.15 (2.32-4.28) 0.001UrgencyElective 1 (reference) -Urgent 1.74 (1.54-1.97) 0.001Emergent 3.45 (2.75-4.34) 0.001ConduitNative Vein 1 (reference) -Dacron 1.09 (0.56-2.11) 0.810PTFE 1.36 (1.20-1.55) 0.001Non-autologous Biologic 2.41 (1.95-2.97) 0.00180SOUTHERN CALIFORNIA VASCULAR SURGICAL SOCIETY'