Can preoperative parameters and histopathology of the vessels affect arteriovenous fistula outcomes? A prospective observational study

Table 2 Factors associated with patency of arterio-venous fistula 6 weeks after surgery, on univariate and multivariate analysis, n (%)/mean ± SD

		Univariate analysis			Multivariate analysis
Variables	AVF patency at 6 weeks	No	Yes	P value	Odds ratio	95%CI		P value
Triglycerides	< 200 mg/dL	4 (5.80)	3 (4.30)	0.036	0.162	0.032	0.828	0.029
	> 200 mg/dL	11 (15.90)	51 (73.90)
Vessel wall biopsy	Normal	0 (0.00)	31 (44.90)	< 0.0001	1.652	1.278	2.136	0.001
	Abnormal	15 (21.70)	23 (33.30)
Artery diameter (mm)		2.73 ± 0.97	3.52 ± 1.33	0.036	1.488	0.469	4.721	0.026
Vein diameter (mm)		2.75 ± 0.89	3.72 ± 1.12	0.003	1.677	0.431	2.457	0.041
Depth of artery from skin (mm)		4.81 ± 2.50	2.93 ± 2.05	0.01	2.633	1.254	4.379	0.015
Depth of vein from skin (mm)		2.82 ± 1.01	2.15 ± 0.95	0.02	1.869	0.852	2.736	0.026

AVF: Arteriovenous fistula; CI: Confidence interval.