Table 1.

Adjusted Associations of Participant Characteristics and Superficial Femoral Artery Occlusion among Individuals with Peripheral Artery Disease (N=457)^*

	No occlusions in the superficial femoral artery (N= 398)	One or more occlusions in the superficial femoral artery (N=59)	P value
Ankle brachial index	0.68 (0.01)	0.58 (0.02)	<0.001
Body Mass Index	29.3 (0.3)	28.9 (0.8)	0.573
Diabetes Mellitus	39.4% (2.4%)	34.3% (6.3%)	0.453
Hypertension	90.7% (1.5%)	88.4% (3.8%)	0.566
Current Smoking	24.2% (2.0%)	26.9% (5.2%)	0.577
Angina	21.6% (2.1%)	28.5% (5.4%)	0.238
Myocardial infarction	19.8% (2.0%)	30.8% (5.3%)	0.053
Heart failure	12.6% (1.7%)	15.0% (4.4%)	0.597
Stroke	16.6% (1.9%)	16.5% (4.9%)	0.993
Mean plaque volume	0.65 (0.01)	1.04 (0.01)	<0.001
Mean lumen area	0.36 (0.01)	0.08 (0.01)	<0.001
	Leg Symptoms
Intermittent claudication	22.1% (2.1%)	30.5% (5.5%)	0.159
Asymptomatic	22.2% (1.9%)	5.93% (5.1%)	0.007
Pain/Carry on	8.8% (1.5%)	17.1% (3.9%)	0.049
Atypical exertional leg pain	19.9% (2.0%)	18.3% (5.2%)	0.782
Pain on exertion and rest	27.0% (2.2%)	28.2% (5.7%)	0.833
	Collateral Grade†
	No occlusions in the superficial femoral artery (N= 251)	Occlusions in superficial femoral artery (N=40)
Grade 1	50.5% (2.9%)	11.7% (7.4%)	<0.001
Grade 2	18.6% (2.4%)	9.01% (6.0%)	0.158
Grade 3	6.00% (1.7%)	20.0% (4.2%)	0.004
Grade 4	24.9% (2.8%)	59.3% (6.9%)	<0.001
	Collateral Vessel Number†
0-3 collateral vessels	24.5% (2.5%)	6.56% (6.3%)	0.02
4-7 collateral vessels	51.0% (3.2%)	47.2% (8.0%)	0.649
8 or more collateral vessels	24.5% (2.7%)	46.3% (6.8%)	0.003

^*Mean values (standard error) are shown after adjustment for age, sex, and race.

^† 291 participants underwent a magnetic resonance angiogram for measuring collateral vessels.