Table 1.

Baseline characteristics of patients, overall and according to first access type attempteda

Overall (n = 239)Catheter Only (n = 49)AVF (n = 157)Graft (n = 33)
Mean age (yr [95% CI])63.6 (61.6–65.6)65.1 (60.1–70.0)63.6 (61.2–66.0)61.3 (55.4–67.2)
Female gender (%)b86 (36.0)21 (42.9)44 (28.0)21 (63.6)
Charlson comorbidity index (mean [95% CI])5.0 (4.7–5.3)5.1 (4.3–6.0)5.0 (4.7–5.3)4.7 (3.9–5.5)
    low risk (≤3)26.8%17 (34.7%)38 (24.2%)9 (27.3%)
    medium risk (4–5)38.1%12 (24.5%)63 (40.1%)16 (48.5%)
    high risk (≥6)35.1%20 (40.8%)56 (35.7%)8 (24.2%)
Comorbid conditions (%)
    coronary heart disease42.7%34.7%44.6%45.5%
    congestive heart failure39.3%42.9%40.8%27.3%
    peripheral vascular disease21.8%22.4%22.3%18.2%
    previous stroke16.3%14.3%17.2%15.2%
    lung disease34.3%30.6%35.7%33.3%
    diabetesc45.2%28.6%47.8%57.6%
Site of first surgery
    forearm (%)N/AN/A95 (60.5%)f31 (93.9%)f
Successful surgery on first attemptd (95% CI)N/AN/A66.9% (58.9–74.1)84.8% (68.1–94.9)
Risk of death in year 1e (%)25 (51.0%)25 (15.9%)5 (15.1%)
  • a AVF, arteriovenous fistula; CI, confidence interval.

  • b P < 0.001 for comparison of gender between vascular access groups, using one-way ANOVA.

  • c P = 0.02 for comparison of diabetes between vascular access groups, using Fisher exact test.

  • d Defined as needling of the access with two needles on three consecutive runs with blood flow >300 ml/min.

  • e P < 0.001 for comparison of risk of death between vascular access groups, using one-way ANOVA.

  • f P < 0.001 for comparison of likelihood of placement of a forearm access between AVF and graft groups, using Fisher exact test.