Table 2.

Variables significantly associated with AVF use in the final multivariate model

VariableOR [95% CI]F Value Statistic, Df, P
Patient demographics
    Age (per 10 yr older)0.91 [0.88, 0.95]23.6, 1, <0.001
    Patient race/ethnicity12.2, 4, <0.001
        Caucasian (reference)1.00
        African American0.69 [0.61, 0.79]
        Hispanic1.11 [0.87, 1.41]
        Other0.91 [0.69, 1.20]
Patient gender313.5, 1, <0.001
    Female0.40 [0.37, 0.45]
Patient dialysis vintage23.5, 4, <0.001
    30 to 90 d0.34 [0.25, 0.45]
    90 d to 1 yr0.69 [0.60, 0.92]
    1 to 3 yr (reference)1.00
    More than 3 yr0.81 [0.62, 1.07]
Patient characteristics
    History of CVA or TIA0.86 [0.74, 0.99]3.9, 1, 0.04
    Presence of diabetes mellitus0.83 [0.72, 0.95]7.5, 1, 0.006
    Dementia0.70 [0.56, 0.88]9.3, 1, 0.002
    Inability to ambulate/transfer0.64 [0.51, 0.79]16.5, 1, <0.001
    BMI categories
        ≤18.5 kg/m20.83 [0.66, 1.04]4.0, 4, 0.008
        18.5 to ≤24.9 kg/m2 (reference)1.00
        24.9 to ≤29.9 kg/m20.89 [0.79, 1.00]
        >29.9 kg/m20.81 [0.72, 0.92]
    Albumin, per 0.5 g/dl1.34 [1.25, .44]64.4, 1, <0.001
  • OR, odds ratio; Df, degrees of freedom; CVA, cerebrovascular accident; TIA, transient ischemic attack. Patient-level covariates that were tested but were not significant: etiology of kidney disease, predialysis systolic BP, and the following comorbidities based on Form 2728 plus claims in past 3 years: hypertension, ischemic heart disease, acute coronary syndrome in the past 6 months, arrhythmia, cardiac arrest, congestive heart failure requiring hospitalization in the past 6 months, history of peripheral vascular disease, osteomyelitis in the past 6 months, limb amputation, decubitus ulcer, smoking status, alcohol abuse, HIV, solid or hematologic malignancy, anemia due to hereditary disease or associated with malignancy, end-stage liver disease, chronic lung disease, and medication noncompliance. Facility-level factors that were tested but not significant: patients per center, patient care staff to patient ratio, proportion of patients that had undergone transplantation, proportion of employed patients, median income, and urban/rural status.