Table 2 Comparison between Dry Synovitis and RF-negative polyarticular JIA
From: Dry synovitis, a rare entity distinct from juvenile idiopathic arthritis
Clinical Features | Dry arthritis (no.12) | Poly JIA (no.35) | Significance | |
|---|---|---|---|---|
Sex (female) | 8 (66.7%) | 33 (94.3%) | 0.03 | |
Linear growth | 10 (83.3%) | 33 (94.3%) | 0.238 | |
Joints involved at diagnosis (mean, no.) | 32 | 14 | 0.0001 | |
Joint involvement | Upper limbs | 12 (100%) | 35 (100%) | 1.00 |
Lower limbs | 10 (83.3%) | 34 (97.1%) | 0.156 | |
Spine | 8 (66.7%) | 14 (40%) | 0.11 | |
Symptoms at diagnosis | Swelling | 1 (8.3%) | 35 (100%) | 0.0001 |
Joint stiffness | 11 (91.7%) | 34 (97.1%) | 0.45 | |
Contractures | 10 (83.3%) | 10 (28.6%) | 0.0001 | |
Arthralgia | 8 (66.7%) | 24 (38.6%) | 0.9 | |
Age at 1st manifestation (mean, years) | 6.1 | 5.3 | 0.608 | |
Age at diagnosis (mean, years) | 8.9 | 5.8 | 0.021 | |
Diagnostic delay (mean, years) | 2.9 | 0.3 | 0.0001 | |
Follow up duration (mean, years) | 6.7 | 5.8 | 0.494 | |