Table 3.
Banff characteristics in relation to IF C4d staining patterns
| Banff Characteristic | C4d+ (n = 12), n (%) | C4d− (n = 85), n (%) | P |
|---|---|---|---|
| Glomerulitis | 1 (8.3) | 9 (10.6) | 1.00 |
| Chronic glomerular changes | 1 (8.3) | 5 (5.9) | 0.56 |
| Tubulitis | 7 (58.3) | 49 (57.6) | 1.00 |
| Tubular atrophy | 1 (8.3) | 43 (50.6) | 0.006 |
| Interstitial infiltrate | 5 (41.7) | 48 (56.5) | 0.37 |
| Interstitial fibrosis | 2 (16.7) | 38 (44.7) | 0.12 |
| Intima arteritis (vascular rejection) | 4 (33.3) | 33 (43.4) | 0.75 |
| Peritubular capillaritis | 4 (33.3) | 22 (25.9) | 0.74 |
| Chronic vascular changes | 5 (41.7) | 41 (52.6) | 0.55 |
C4d + diffuse positive-stained slides versus C4d− focal positive- or negative-stained slides. All characteristics were split in presence (score 1 to 3) and absence (0), except for glomerulitis, tubulitis, interstitial infiltrate, and peritubular capillaritis, where we dichotomized for mild (0, 1) and severe (2, 3). Fisher exact test was used to calculate significances of differences between groups. Values are expressed as mean and number (%).