Table 5.
Postmaturation AVF survival without intervention for patients with unassisted maturation: univariable analysis
| Variable | Hazard Ratio | 95% CI | P Value |
|---|---|---|---|
| No. of patients | |||
| Age, per 10 yr | 1.10 | 0.91 to 1.36 | 0.30 |
| Sex, female versus male | 1.01 | 0.62 to 1.66 | 0.96 |
| Race, black versus nonblack | 1.26 | 0.64 to 2.47 | 0.50 |
| Hypertension | 1.02 | 0.43 to 2.41 | 0.96 |
| Diabetes mellitus | 1.18 | 0.74 to 1.87 | 0.49 |
| Coronary artery disease | 1.34 | 0.81 to 2.21 | 0.27 |
| Peripheral vascular disease | 1.21 | 0.67 to 2.17 | 0.54 |
| Cerebrovascular disease | 1.04 | 0.58 to 1.86 | 0.91 |
| Heart failure | 1.05 | 0.64 to 1.72 | 0.84 |
| Obesity, BMI≥30 kg/m2 | 0.97 | 0.61 to 1.54 | 0.90 |
| AVF location, upper arm versus forearm | 1.12 | 0.66 to 1.90 | 0.67 |
| Postoperative ultrasound | |||
| Stenosis | 1.06 | 0.66 to 1.68 | 0.82 |
| Diameter, per mm | 0.84 | 0.76 to 0.94 | 0.001 |
| Blood flow, per 100 ml/min | 0.95 | 0.90 to 1.00 | 0.05 |
| Depth, per mm | 1.06 | 0.97 to 1.15 | 0.24 |
AVF, arteriovenous fistula; 95% CI, 95% confidence interval; BMI, body mass index.