Fig. 2From: Long-term performance of an external stent for saphenous vein grafts: the VEST IV trialPerfect patency and graft failure rates of stented and nonstented vein grafts at 1 and 4.5 years post CABG. Green bars - perfect patency rates within each arm of stented (n = 40) and nonstented (n = 59) grafts (p = 0.002). Grey bars - graft failure rates within each arm of stented (n = 56) and nonstented (n = 72) grafts (p = 0.416)Back to article page