Table 1.

Patient characteristics at time of first access creation in 1140 hemodialysis patients

CharacteristicOverall (n=1140)Dialysis AccessP Valuea
AV Fistula (n=1012)AV Graft (n=128)
Mean age (yr)60.0 (18–91)b59.8 (16.4)61.3 (14.9)0.34
Age ≥ 65 yr513 (45.0)453 (44.8)60 (46.9)0.65
Male734 (64.4)682 (67.4)52 (40.6)<0.001
Race
 White823 (72.2)741 (73.2)82 (64.1)0.03
 Black70 (6.1)55 (5.4)16 (12.5)0.002
 Other244 (21.5)214 (21.2)30 (23.4)0.90
Mean body mass index (kg/m2)27.0 (6.6)26.5 (6.2)30.4 (8.0)<0.0001
Primary renal diagnosis
 Hypertension230 (20.2)214 (21.1)16 (12.5)0.02
 Diabetes333 (29.2)280 (27.7)53 (41.4)0.001
 GN169 (14.8)151 (14.9)18 (14.1)0.80
 Interstitial nephritis19 (1.7)16 (1.6)3 (2.3)0.53
 Hereditary/other308 (27.0)277 (27.4)31 (24.2)
 Unknown81 (7.1)74 (7.3)7 (5.5)0.44
Median duration of dialysis at time of access creation (mo) (IQR)0.92 (−3.39 to 5.85)0.92 (−3.68 to 5.56)1.51 (−1.05 to 7.40)0.62
Comorbid conditions
 Diabetes463 (40.6)390 (38.5)73 (57.0)<0.0001
 Hypertension825 (72.4)727 (71.8)98 (76.6)0.26
 Coronary artery disease274 (24.0)237 (23.4)37 (28.9)0.17
 Congestive heart failure148 (13.0)123 (12.1)25 (19.5)0.02
 Peripheral vascular disease90 (7.9)79 (7.8)11 (8.6)0.76
 Cerebrovascular disease107 (9.4)92 (9.0)15 (11.7)0.33
  • Unless otherwise noted, values are numbers (percentages). Means are given with SDs. AV, arteriovenous; IQR, interquartile range.

  • a Variables were compared using the chi-squared test or t test as appropriate.

  • b Range.