Table 2.
Variables significantly associated with AVF use in the final multivariate model
| Variable | OR [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/ethnicity | 12.2, 4, <0.001 | |
| Caucasian (reference) | 1.00 | |
| African American | 0.69 [0.61, 0.79] | |
| Hispanic | 1.11 [0.87, 1.41] | |
| Other | 0.91 [0.69, 1.20] | |
| Patient gender | 313.5, 1, <0.001 | |
| Female | 0.40 [0.37, 0.45] | |
| Patient dialysis vintage | 23.5, 4, <0.001 | |
| 30 to 90 d | 0.34 [0.25, 0.45] | |
| 90 d to 1 yr | 0.69 [0.60, 0.92] | |
| 1 to 3 yr (reference) | 1.00 | |
| More than 3 yr | 0.81 [0.62, 1.07] | |
| Patient characteristics | ||
| History of CVA or TIA | 0.86 [0.74, 0.99] | 3.9, 1, 0.04 |
| Presence of diabetes mellitus | 0.83 [0.72, 0.95] | 7.5, 1, 0.006 |
| Dementia | 0.70 [0.56, 0.88] | 9.3, 1, 0.002 |
| Inability to ambulate/transfer | 0.64 [0.51, 0.79] | 16.5, 1, <0.001 |
| BMI categories | ||
| ≤18.5 kg/m2 | 0.83 [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/m2 | 0.89 [0.79, 1.00] | |
| >29.9 kg/m2 | 0.81 [0.72, 0.92] | |
| Albumin, per 0.5 g/dl | 1.34 [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.