Hazard ratio (95% confidence intervals) for health outcomes according to ABI categoriesa
|Health outcomes||Unadjusted model||Adjusted modelb|
|Model 1||Model 2|
|ab-ABI||1.99 (1.22-3.24)||1.74 (1.06-2.87)||1.50 (0.89-2.50)|
|ab-ABI||1.54 (0.89-2.66)||1.44 (0.83-2.51)||1.19 (0.67-2.15)|
|ab-ABI||2.53 (1.25-5.12)||2.53 (1.20-5.34)||2.80 (1.24-6.34)|
|ab-ABI||2.98 (1.17-7.55)||2.53 (0.98-6.50)||2.24 (0.82-6.09)|
ABI, ankle-brachial index; MACE, major adverse cardiac events; nl-ABI, normal ABI; ab-ABI, abnormal ABI.
aABI categories were defined as ab-ABI (<1.0 or >1.4) and nl-ABI (1.0≤ABI≤1.4). bModel 1 was adjusted for age and sex and model 2 was further adjusted for cigarette smoking, body mass index, number of diseased vessels, and underlying disease. cMACE included disease progression, repeated revascularization, and all-cause mortality. dDisease progression was defined as stenosis >30% or occlusion of any coronary artery that has newly appeared on the latest coronary angiography. eRepeated revascularization was identified as stenosis >50% on coronary angiography or stenosis <50% with a correlated symptom.