Table 1.

Baseline characteristics

Characteristic	AVF (n=479)
Age (yr)	65.3 (54.3–73.7)
Sex, female	174 (36.3)
Race, white	440 (91.9)
Primary kidney disease
Diabetes mellitus	73 (15.2)
GN	54 (11.3)
Renal vascular disease	99 (20.7)
Others	253 (52.8)
Interstitial nephropathy	48 (10.0)
Cystic kidney disease	63 (13.2)
Congenital and hereditary kidney disease	5 (1.0)
Multisystem disease	28 (5.8)
Other	18 (3.8)
Unknown	91 (19.0)

Data are presented as n (%) or median (interquartile range). AVF, arteriovenous fistula.