Table 1.
Descriptive statistics of all patient variables regarded as potential predictors in the analysis.
| Variable | All patients (N = 124) | Patients with one lesion only (N = 80) |
|---|---|---|
| Age (years) | ||
| Mean (SD) [range] | 62.6 (15.1) [23, 90] | 63.8 (16.0) [23, 90] |
| Age n (%) | ||
| <65 years | 61 (49.2) | 36 (45.0) |
| ⩾65 years | 63 (50.8) | 44 (55.0) |
| Sex n (%) | ||
| Male | 59 (47.6) | 38 (47.5) |
| Female | 65 (52.4) | 42 (52.5) |
| Ethnicity n (%) | ||
| Black | 45 (36.3) | 28 (35.0) |
| Asian | 12 (9.7) | 7 (8.7) |
| White | 57 (46.0) | 41 (51.3) |
| Other | 9 (7.3) | 4 (5.0) |
| Missing | 1 (0.8) | – |
| Age of fistula (days) | ||
| Median (IQR) [range] | 477.5 (211.5, 1243.5) [49, 4570] | 472 (188, 1321) [49, 4570] |
| Statin therapy intensity† n (%) | ||
| None | 60 (48.4) | 37 (46.3) |
| Low | 5 (4.0) | 4 (5.0) |
| Medium | 40 (32.3) | 30 (37.5) |
| High | 19 (15.3) | 9 (11.2) |
| History of coronary artery disease (CAD) n (%) | ||
| Yes | 25 (20.2) | 14 (17.5) |
| No | 99 (79.8) | 66 (82.5) |
| History of peripheral vascular disease (PVD) n (%) | ||
| Yes | 14 (11.3) | 10 (12.5) |
| No | 110 (88.7) | 70 (87.5) |
| Anticoagulation n (%) | ||
| Yes | 7 (5.6) | 3 (3.8) |
| No | 117 (94.4) | 77 (96.2) |
| Diabetes n (%) | ||
| Yes | 52 (41.9) | 29 (36.3) |
| No | 72 (58.1) | 51 (63.7) |
| Type of access n (%) | ||
| Brachiobasilic | 43 (34.7) | 28 (35.0) |
| Brachiocephalic | 70 (56.4) | 44 (55.0) |
| Radiocephalic | 11 (8.9) | 8 (10.0) |
| Lesion length (mm) Mean (SD) [range] |
NA | (n = 76) 3.8 (1.8) [1, 12] |
| Number of lesions n (%) | ||
| 1 | 80 (64.5) | |
| 2 | 41 (33.1) | |
| 3 | 2 (1.6) | |
| 4 | 1 (0.8) | NA |
| Lesion site n (%) | ||
| Anastomotic | 8 (10.0) | |
| Perianastamotic | 14 (17.5) | |
| Mid-limb | 27 (33.8) | |
| Swing point/cephalic arch | 25 (31.2) | |
| Central stenosis | 4 (5.0) | |
| Arterial | NA | 2 (2.5) |
| Thrombosis n (%) | ||
| Yes | 13 (10.5) | 7 (8.7) |
| No | 111 (89.5) | 73 (91.3) |
| Previous interventions n (%) | ||
| None | 82 (66.1) | 54 (67.5) |
| 1 | 30 (24.2) | 19 (23.8) |
| 2 or more | 12 (9.7) | 7 (8.7) |
IQR: interquartile range.
Low: Fluvastatin (20-–40 mg), Lovastatin (20 mg), Simvastatin (10 mg) or Pravastatin (10–20 mg); medium: Atorvastatin (10–20 mg), Fluvastatin (80 mg), Pravastatin (40–80 mg), Rosuvastatin (5–10 mg) or Simvastatin (20–40 mg); high: Atorvastatin (40–80 mg) or Rosuvastatin (20–40 mg).
†
None: no statin therapy.