Table 3.

Regression coefficient summary for predictor variables included in multivariate regression models for 6-min walk distances in 251 symptomatic patients with peripheral artery disease.

Dependent Variables	Predictors	Regression Coefficient	95% Confidence Interval	Partial R2	P Value
6-min Walk Distance
	Ankle-Brachial Index	133.14	78.75 to 187.52	0.13	<.001
	Sex (Men)	62.90	36.37 to 89.42	0.09	<.001
	Hydroxyl Radical Antioxidant Capacity	136.68	69.75 to 203.62	0.06	<.001
	Cultured Endothelial Cell NF-κB	−36.93	−56.98 to −16.88	0.04	<.001
	Coronary Artery Disease	−37.59	−65.48 to −9.69	0.03	0.009
	Body Mass Index	−2.70	−5.01 to −0.39	0.01	0.022
	Intercept	232.34	134.23 to 330.46		<.001
6-min Walk Pain-Free Distance
	Dyslipidemia	−121.21	−187.6 to −54.83	0.07	<.001
	Chronic Kidney Disease	−63.79	−106.94 to −20.64	0.05	0.004
	Cultured Endothelial Cell NF-κB	−36.47	−62.72 to −10.21	0.03	0.007
	Height	2.63	0.70 to 4.55	0.02	0.008
	Intercept	−98.17	−427.89 to 231.56		0.557

Overall model results: 6-min Walk Distance: R² = 0.363, p < 0.001

6-min Walk Pain-Free Distance: R² = 0.167, p < 0.001