Effect of Artery Diameter and Velocity and Vein Diameter on Upper Limb Arteriovenous Fistula Outcomes

Table 4

Univariate and multivariate analyses between demographics, fistula type, comorbidities, vessel measurements and heparin use, and AVF outcomes.

Variables	Univariate analyses			Multivariate analyses
	RR ratio	95% CI	value	RR ratio	95% CI	value
Patient age	1.01	(0.97, 1.03)	0.659	1.01	(0.97, 1.05)	0.455
Gender (male)	1.74	(0.60, 5.11)	0.307	2.18	(0.59, 8.49)	0.245
Fistula type (RCF)	1.79	(0.44, 6.94)	0.398	2.06	(0.35, 12.77)	0.420
Fistula type (BCF)	8.33	(1.02, 18.36)	0.080	8.82	(0.89, 21.18)	0.092
Fistula type (BBF)	2.66	(0.44, 1.22)	0.080	2.49	(0.40, 1.18)	0.097
Diabetes	2.99	(0.66, 4.76)	0.120	2.54	(0.90, 3.99)	0.098
Hypertension	1.63	(1.09, 4.90)]	0.440	1.88	(1.54, 4.66)	0.398
Minimum vein diameter	1.80	(1.22, 2.66)	0.044	1.45	(1.18, 2.27)	0.038
Maximum vein diameter	1.51	(0.82, 2.93)	0.197	1.98	(0.69, 6.44)	0.220
Artery diameter	1.57	(0.87, 3.10)	0.016	1.15	(1.01, 3.18)	0.037
Artery velocity	1.01	(0.99, 1.02)	0.385	1.00	(0.97, 1.02)	0.985
Intraoperative heparin	1.35	(0.66, 1.90)	0.2100	1.11	(0.54, 1.76)	0.200