Table 3.
Predictors of first joint injection in patients with Juvenile Idiopathic Arthritis
| Hazard ratio*
(95 % CI) |
p-value | |
|---|---|---|
| Age, years | 1.06 (0.99, 1.13) | 0.11 |
| Male sex | 1.44 (0.72, 2.87) | 0.30 |
| Calendar year of diagnosis | 1.12 (1.05, 1.20) | <0.001 |
| JIA subtype – Polyarthritis (vs Oligoarthritis) | 0.98 (0.36, 2.64) | |
| JIA subtype – Undifferentiated (vs
Oligoarthritis) |
0.98 (0.40, 2.41) | 0.98 |
| JIA subtype – Other (vs Oligoarthritis) | 0.75 (0.17, 3.24) | |
| Time from symptom onset to diagnosis,
months |
1.02 (0.98, 1.07) | 0.35 |
| Presence at diagnosis - tenosynovitis | 2.54 (0.75, 8.545 | 0.13 |
| Hemoglobin at diagnosis | 0.96 (0.67, 1.37) | 0.82 |
| Leukocytes at diagnosis | 1.00 (1.00, 1.00) | 0.067 |
| ESR at diagnosis | 1.00 (0.98, 1.02) | 0.66 |
| CRP at diagnosis (mg/L) | 1.01 (0.99, 1.03) | 0.42 |
| ANA | 2.58 (1.16, 5.74) | 0.020 |
| RF | 1.18 (0.43, 3.25) | 0.75 |
| ACPA | 1.03 (0.16, 6.84) | 0.97 |
| HLA B27 | 3.15 (0.28, 35.22) | 0.35 |
*
Adjusted for age and sex. ACPA=anti-citrullinated peptide antibody. ANA=antinuclear antibody. CRP=C-reactive protein. ESR=Erythrocyte sedimentation rate. JIA=juvenile idiopathic arthritis. RF=rheumatoid factor.