Patient demographics.
| Variables | Oligoarticular JIA, n = 31 | Polyarticular JIA, n = 22 | SpA, n = 16 | IBD-related Arthritis, n = 11 | Control Group, n = 34 |
|---|---|---|---|---|---|
| Age, yrs, median (IQR) | 4.0 (3.0–9.0)1 | 11.5 (9.8–14.0) | 14.5 (10.5–17) | 15.0 (10–16) | 10.5 (6.8–15) |
| Sex, male:female, n (%) | 11 (34):20 (65) | 8 (36):14 (64) | 10 (63):6 (37) | 7 (64):4 (36) | 19 (56):15 (44) |
| Race | White = 30 African American = 1 | White = 20 African American = 1 African American/Asian/White = 1 | White = 13 African American = 3 | White = 10 African American = 1 | White = 32 Indian/Alaskan = 1 Unknown = 1 |
| Ethnicity | Non-Hispanic = 31 Hispanic = 0 | Non-Hispanic = 22 Hispanic = 0 | Non-Hispanic = 16 Hispanic = 0 | Non-Hispanic = 11 Hispanic = 0 | Non-Hispanic = 33 Hispanic = 1 |
| JADAS-27 score, median (IQR) | 8.85 (7.3–13.6)2 | 20 (13–26.9)3 | 12.75 (9–16.9)3 | NA | NA |
↵1 The age of the oligoarticular JIA group was significantly lower than the ages of all other groups (uncorrected p value for all comparisons < 0.001, with significance set at 0.005 after correction for multiple comparisons between all groups). None of the remaining comparisons were statistically significant.
↵2 Eight subjects evaluated.
↵3 Eleven subjects evaluated. JADAS: Juvenile Arthritis Disease Activity Score; JIA: juvenile idiopathic arthritis; SpA: spondyloarthropathies; IBD: inflammatory bowel disease; IQR: interquartile range; NA: not applicable.