Table 1.

Patient and dialysis facility characteristics across quartiles (Q) of facility % AVF use

Q1 % AVF 3.6% to 28.6% (n = 2518)Q2 % AVF 28.6% to 38.0% (n = 2563)Q3 % AVF 38.0% to 46.2% (n = 2481)Q4 % AVF 46.2% to 70.0% (n = 2550)Trend P
Patient characteristics
    Age, yr, mean ± SD59.7 ± 15.160.1 ± 15.262.3 ± 15.361.5 ± 15.1<0.001
    Female gender, %494747450.006
    Race, %<0.001
        White,35415349
        African American,62543533
        Hispanic,22611
    Other,1277
    Cause of ESRD, %<0.001
        Glomerulonephritis12111215
        Hypertension31332524
        Diabetes40394442
        Other14141615
        PKD3334
    Dialysis vintage, %0.0001
        <3 mo4454
        3 mo to 1 yr15161818
        1 to 3 yr33333535
        >3 yr48474343
    BMI categories, %0.25
        ≤18.5 kg/m26565
        18.5 to ≤24.9 kg/m238403738
        24.9 to ≤29.9 kg/m228272929
        >29.9 kg/m228282829
    Predialysis systolic BP, %<0.0001
        <1205799
        120 to <14021212526
        140 to <16035373636
        ≥16039353030
    Comorbidities, %
        History of CVA/TIA242523220.03
        Diabetes mellitus595761590.22
        History of PVD262627240.15
        History of IHD464851470.18
    Laboratory parameters
        Albumin, g/dl, mean ± SD3.8 ± 0.43.8 ± 0.43.8 ± 0.43.8 ± 0.40.05
Facility characteristics, median (interquartile range)
    Total patients per facility, n50 (36 to 71)56 (43 to 86)55 (39 to 76)63 (48 to 99)0.05
    Total patient care staff per 100 patients, n18 (15 to 21)18 (15 to 21)18 (16 to 20)17 (14 to 19)0.35
    Percent of employed patients6 (3 to 10)5 (1 to 10)5 (2 to 9)8 (3 to 12)0.58
    Percent receiving a kidney transplant within the past year4 (1 to 8)4 (2 to 8)5 (3 to 7)5 (3 to 8)0.22
    Median household income, $32,419 (27,190 to 40,663)32,838 (26,648 to 37,254)35,353 (30,721 to 37,778)36,850 (30,655 to 45,878)0.03
  • BMI, body mass index; CVA/TIA, cerebrovascular accident/transient ischemic attack; PVD, peripheral vascular disease; IHD, ischemic heart disease. Comorbidities are derived using data from the Form 2728 and Medicare claims for the years 2002 to 2004. See text for details. Total patient care staff includes registered nurses, licensed practical nurses, and patient care technicians.