Table 3.

Arteriovenous access procedures^a

Procedure Type	Number	Mean	95% CI	SD	Median	Changeb	Significancec, P Value
Arteriovenous proceduresa
PTA (total)	355,541	67.9	60.4 to 74.0	11.6	71.2	47.7–80.3	<0.001
AVF PTA	241,019	41.1	27.9 to 49.3	16.3	46.8	13.3–58.6	<0.001
AVG PTA	114,522	26.8	23.9 to 29.1	4.9	24.4	35.2–21.7	<0.001
Throm (total)	122,138	32.1	25.0 to 36.7	11.5	28.8	52.3–19.7	<0.001
AVF Throm	24,167	4.7	4.0 to 5.2	1.0	4.9	2.6–5.8	0.004
AVG Throm	97,971	27.4	19.8 to 31.8	12.3	23.0	49.8–14.0	<0.001
Total numbers
PTA:Throm ratio	—	2.5	1.6 to 2.9	1.1	2.5	0.9–4.1	<0.001
AVF procedures	265,201	45.8	33.2 to 54.6	17.1	52.6	16.8–63.3	<0.001
AVG procedures	212,478	54.2	44.0 to 60.040	17.1	47.4	83.2–36.7	<0.001
AVF proceduresd
PTA	241,019	88.6	86.5 to 90.6	3.6	89.0	79.1–92.5	<0.001
Failure to maturee	25,041	12.6	10.0 to 15.3	1.2	11.9	18.6–7.1	0.01
Success rate	238,927	98.5	98.0 to 99.0	0.9	98.6	96.7–99.6	0.95
Procedure time, min	—	24.3	20.3 to 27.2	6.4	25.4	35.5–15.9	0.002
Complication rate	4275	2.6	1.9 to 3.2	1.2	2.3	5.1–1.3	<0.001
Major	880	0.4	0.3 to 0.4	0.1	0.4	0.6–0.2	<0.001
Minor	3395	2.2	1.4 to 2.5	1.2	1.8	4.5–1.0	<0.001
Throm	24,167	11.0	9.4 to 13.4	0.9	11.0	20.9–7.5	<0.001
Success rate	21,074	83.7	82.3 to 85.8	3.9	83.6	74.4–88.6	<0.001
Procedure time, min	—	54.6	49.1 to 59.0	9.8	54.7	72.0–41.7	0.03
Complication rate	1533	7.1	6.0 to 7.1	2.1	6.5	5.1–12.2	<0.001
Major	584	2.4	2.1 to 2.7	0.8	2.4	3.8–0.1	<0.001
Minor	949	4.7	3.7 to 5.4	1.6	4.2	8.4–2.9	<0.001
PTA:Throm ratio
Incidence rate	—	8.5	6.7 to 9.7	2.6	8.1	3.8–12.4	<0.001
Procedure time	—	0.4	0.4 to 0.5	0.0	0.4	0.5–0.4	<0.001
Complications (total)	—	0.3	0.3 to 0.4	0.1	0.3	0.4–0.2	0.003
Major	—	0.2	0.1 to 0.2	0.04	0.2	0.1–0.2	<0.001
Minor	—	0.4	0.4 to 0.5	0.1	0.4	0.9–0.3	<0.001
AVG proceduresd
PTA	114,522	51.9	47.4 to 54.6	6.4	52.1	40.0–59.7	<0.001
Success rate	113,259	98.9	98.5 to 99.9	0.7	99.0	97.2–99.6	<0.001
Procedure time, min	—	17.9	15.7 to 19.6	3.7	17.8	25.9–13.3	<0.001
Complication rate	1179	1.2	1.0 to 1.4	0.6	1.1	3.0–0.3	0.03
Major	260	0.3	0.2 to 0.3	0.2	0.2	0.6–0.1	0.003
Minor	919	0.9	0.7 to 1.1	0.5	0.9	2.3–0.2	0.01
Throm	97,971	47.8	45.0 to 52.0	0.1	47.9	60.1–40.3	<0.001
Success rate	89,563	92.5	91.7 to 93.4	1.7	92.4	90.2–95.2	<0.001
Procedure time, min	—	37.3	34.9 to 39.4	4.5	37.8	46.2–31.3	<0.01
Complication rate	3678	4.3	3.4 to 5.2	1.6	3.8	7.5–2.5	<0.001
Major	1316	1.4	1.2 to 1.7	0.4	1.3	2.5–0.9	<0.001
Minor	2362	2.8	2.2 to 3.6	1.3	2.6	5.0–1.4	<0.001
PTA:Throm ratio
Incidence	—	1.1	0.9 to 1.2	0.3	1.1	0.7–1.5	0.002
Procedure time	—	0.5	0.5 to 0.5	0.1	0.5	0.7–0.4	<0.001
Complications	—	0.3	0.2 to 0.3	0.1	0.3	0.1–0.7	0.14
Major	—	0.2	0.2 to 0.2	0.1	0.2	0.3–0.1	<0.001
Minor	—	0.4	0.3 to 0.3	0.1	0.3	0.2–0.5	0.01

95% CI, 95% confidence interval; PTA, angioplasty; AVF, arteriovenous fistula; AVG, arteriovenous graft; Throm, thrombectomy; —, not applicable.

^aArteriovenous procedures (AVF and AVG combined).

^bChange indicates the range from beginning of 15-yr period to end.

^cSignifinace represents a test of the trend over time as described under “Change.”

^dAll percentages relate to the access type, not total arteriovenous access.

^eThis percentage is included in the PTA percentage.