Table 3 Summary of nailfold capillaroscopy parameters in the noninfectious uveitis group and pediatric controls
From: Involvement of the systemic microcirculation in pediatric uveitis
Nailfold capillaroscopic parameters | Uveitis, n = 119 | Pediatric controls, n = 25 | P–valuea |
|---|---|---|---|
Capillary density, mean (SD) | 7.2 (0.7) | 7.5 (0.7) | 0.05 |
Capillary density < 7/mm, n (%) | 50 (42) | 5 (20) | 0.07 |
Dilated capillaries/mm, median (IQR) | 0.2 (0–0.4) | 0 (0–0.1) | 0.04 |
Microhemorrhages, n (%) | 17 (17) | 8 (32) | 0.97 |
Avascular areas, median (IQR) | 0.3 (0.2–0.4) | 0.2 (0.1–0.3) | 0.20 |
Capillary morphologyb | |||
 Multiple crossings, mean % (SD) | 5 (4) | 2 (3) | 0.06 |
 Tortuous capillaries, mean % (SD) | 7 (6) | 6 (6) | 0.68 |
 Bushy capillaries, mean % (SD) | 1 (1) | 1 (1) | 0.23 |
 Ramified capillaries, mean % (SD) | 2 (2) | 1 (1) | 0.02 |
 Nonconvex, mean % (SD) | 3 (2) | 4 (2) | 0.16 |
 Bizarre capillaries, mean % (SD) | 2 (3) | 1 (2) | 0.17 |
 Abnormal morphologyc, mean % (SD) | 5 (4) | 5 (4) | 0.79 |