Table 3.

Associations of process of care factors and AVF complications/procedures with attempt to cannulate the AVF in cannulation eligible subcohort, adjusted for basic demographic, case-mix, and ultrasound factors

	OR (95% CI)		P
Process of care factors
Timing of surgeon’s earliest visit, 2 wk vs 2–4 wk	0.21 (0.06–0.70)		0.01
Surgeon has regular 2nd follow-up visit, vs no second visit	0.39	0.15–0.97	0.04
Surgeon’s routine use of postoperative ultrasound, vs. no or selective use	0.28	0.14–0.55	< 0.001
Week 6 vs. earlier routine post-operative ultrasound examination	0.72	0.54–0.96	0.03
Transposed AVF	0.55	0.27–1.10	0.09
Surgeon’s routine no. of post-operative ultrasounds, 1 vs. ≥2	1.18	0.75–1.85	0.5
Dedicated (active) vascular access coordinator	1.24	0.64–2.39	0.5
AVF complications/procedures
No. of pre-cannulation non-study ultrasounds, vs none	0.69	0.48–0.99	0.04
Invasive diagnostic or rescue procedure prior to first cannulation, vs none	0.51	0.27–0.98	0.04

Note: Cannulation eligible subcohort n=491. Adjusted for age, black race, female sex, dialysis status at surgery, diabetes, AVF location, as well as AVF flow, diameter, and depth at week 6. Measurements from missed US examinations, occasional missing observations for race, and unresolved maturation outcomes were multiply imputed.

AVF, arteriovenous fistula; CI, confidence interval; OR, odds ratio