Table 1: Characteristics of the study patients.
| Patients, n | 64 |
| Gender, male (%) | 42 (66) |
| Age, years | 66 ± 16 |
| Charlson comorbidity Index* | 6,6 (2-9) |
| Diabetes, % | 23 (29) |
| On anti-platelet therapy, (%) | 23 (36) |
| On anticoagulant therapy, (%) | 8 (12) |
| Time on dialysis, months | 49 ± 35 |
| Type of AVF, n (%) | |
| Radio-cephalic | 30 (47) |
| Brachio-cephalic | 22 (34) |
| Brachio-basilic | 12 (19) |
| AVFQa, ml/min (at recruitment) | |
| Radio-cephalic** | 790 ± 515 |
| Brachio-cephalic** | 1239 ± 933 |
| Brachio-basilic** | 1452 ± 1109 |
*Median and interquartile range;
**radio-cephalic vs brachio-cephalic p = 0.13;
**brachio-cephalic vs brachio-basilic p = 0.43;
**radio-cephalic vs brachio-basilic p = 0.02