Table III.

Functional patency at 2 years after AVF creation based on baseline characteristics and DUS evaluation.

Category		Functional AVF (N=45)		Non-functional AVF (N=10)		p-value
		n	mean ± SD or % (95% CI)	n	mean ± SD or % (95% CI)
Age (years)		45	59 ± 11.8	10	65 ± 11.3	0.19
Gender	Female	15	75.0 (50.9–91.3)	5	25.0 (8.7–49.1)	0.17
	Male	30	85.7 (69.7–95.2)	5	14.3 (4.8–30.3)
Area	Urban	24	80.0 (61.4–92.3)	6	20.0 (7.7–38.6)	0.36
	Rural	21	84.0 (63.9–95.5)	4	16.0 (4.5–36.1)
Smoker	Yes	7	77.8 (40.0–97.2)	2	22.2 (2.8–60.0)	0.36
	No	38	82.6 (68.6–92.2)	8	17.4 (7.8–31.4)
DM	Yes	15	93.8 (69.8–99.8)	1	6.3 (0.2–30.2)	0.07
	No	30	76.9 (60.7–88.9)	9	23.1 (11.1–39.3)
AHT	Yes	38	82.6 (68.6–92.2)	8	17.4 (7.8–31.4)	0.36
	No	7	77.8 (40.0–97.2)	2	22.2 (2.8–60.0)
IC	Yes	16	80.0 (56.3–94.3)	4	20.0 (5.7–43.7)	0.39
	No	29	83.0 (66.4–93.4)	6	17.1 (6.6–33.6)
PAD	Yes	5	71.4 (29.0–96.3)	2	28.6 (3.7–71.0)	0.23
	No	40	83.3 (69.8–92.5)	8	16.7 (7.5–30.2)
Before dialysis	Yes	17	89.5 (66.9–98.7)	2	10.5 (1.3–33.1)	0.16
	No	28	77.3 (60.9–89.9)	8	22.2 (10.1–39.2)
AVF type	Radiocephalic	23	88.5 (69.9–97.6)	3	11.5 (2.5–30.2)	0.002
	Brachiocephalic	20	87.0 (66.4–97.2)	3	13.0 (2.8–33.6)
	Brachiobasilic	2	33. 3 (4.3–77.7)	4	66.7 (22.3–95.7)

Note: statistical analysis performed by ANOVA chi-square test and ANOVA Parametric Test for Inequality of Population Means (p-value was considered statistically significant if ≤ 0.05). DUS, duplex ultrasonography; N, total number of patients; n, number of patients in a given category; SD, standard deviation; CI, confidence interval; BMI, body mass index; DM, diabetes mellitus; AHT, arterial hypertension; IC, ischemic cardiomyopathy; PAD, peripheral arterial disease; AVF; arteriovenous fistula.