| Variable | Tortuous vessels | t | P | ||
| Negative | Positive | ||||
| Duration of hemodialysis (years) | Median (IQR) | 4 (2 - 5) | 7 (7 - 13) | −2.628‡ | 0.009 |
| Creatinine Level | Mean ±SD | 7.80 ± 1.95 | 10.77 ± 1.61 | −2.533• | 0.017 |