Table 2.

Percent luminal narrowing of vein samples with complete cross-sections (n=365^a) by baseline attributes

Factorb	Factor Present		Factor Absent		P Value
	N	Mean (SD)	N	Mean (SD)
Female	111	36.3 (31.7)	254	30.2 (27.4)	0.08
Black	154	28.8 (29.2)	205	34.8 (28.7)	0.05
Diabetes prevalence	219	33.6 (28.3)	146	29.7 (29.6)	0.22
Cardiovascular disease	198	35.3 (29.3)	167	28.1 (27.9)	0.02
Peripheral arterial disease	51	42.2 (33.7)	314	30.4 (27.7)	0.02
Coronary artery disease	104	36.5 (29.0)	261	30.2 (28.7)	0.06
Cerebrovascular disease	53	36.0 (31.5)	312	31.4 (28.4)	0.32
Venous thromboembolic disease	22	38.8 (32.2)	343	31.6 (28.6)	0.32
Tobacco use	208	35.1 (28.1)	155	28.1 (29.5)	0.02
On dialysis at time of surgery	232	33.6 (29.4)	133	29.3 (27.7)	0.16
Forearm fistula	90	22.9 (26.2)	275	35.0 (29.1)	<0.001
Upper-arm fistula: basilic or brachial vein			126	40.3 (30.2)
Upper-arm fistula: cephalic vein			149	30.6 (27.4)
				P<0.01c

^aSix of the 371 vein samples with complete cross-section were obscured by valves.

^bSee Table 1 footnotes for specific factor definitions.

^cFor comparison of cephalic vein upper-arm fistulas to pooled basilic and brachial vein upper-arm fistulas.