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

Table 3 Factors associated with maturity of arterio-venous fistula 12 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
Smoking	Yes	14 (20.30)	44 (63.80)	0.016	2.759	1.656	5.877	0.03
	No	0 (0.00)	11 (15.90)
Triglycerides	< 200 mg/dL	4 (5.80)	3 (4.30)	0.027	0.144	0.028	0.746	0.021
	> 200 mg/dL	10 (14.50)	52 (75.40)
Vessel wall biopsy	Normal	0 (0.00)	31 (44.90)	0.0001	1.583	1.242	2.019	0.001
	Abnormal	14 (20.30)	24 (34.80)
Artery diameter (mm)		2.57 ± 0.77	3.55 ± 1.33	0.011	1.751	0.536	5.712	0.031
Vein diameter (mm)		2.70 ± 0.90	3.71 ± 0.90	0.002	2.557	1.145	3.891	0.032
Depth of artery from skin (mm)		4.91 ± 0.51	2.43 ± 0.51	0.0001	0.532	0.11	1.967	0.001
Depth of vein from skin (mm)		2.87 ± 0.90	2.15 ± 0.94	0.014	0.856	0.214	1.95	0.036

AVF: Arteriovenous fistula; CI: Confidence interval.