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Table 1 Demographic and clinical features of the 155 study patients
| N | Mean (SD) | Median | Lower Quartile | Upper Quartile | |
|---|---|---|---|---|---|
| Age at disease onset, years | 155 | 4.25 (3.2) | 3.1 | 1.7 | 5.8 |
| Age at study visit, years | 155 | 12.5 (4.4) | 11.8 | 9.2 | 14.9 |
| Disease duration, years | 155 | 8.5 (3.5) | 7.3 | 5.8 | 10 |
| Physician's global assessment§ | 153 | 3.6 (3.4) | 2.5 | 0.5 | 6.3 |
| Parent's global assessment§ | 148 | 1.79 (2.3) | 0.65 | 0 | 3 |
| Parent's pain assessment§ | 145 | 1.91 (2.4) | 1 | 0 | 3 |
| Swollen joint count | 155 | 2.8 (5.1) | 1 | 0 | 3 |
| Tender joint count | 155 | 3.1 (4.6) | 1 | 0 | 4 |
| Restricted joint count | 155 | 4.9 (10.2) | 1 | 0 | 5 |
| Active joint count | 155 | 3.9 (6.2) | 2 | 1 | 5 |
| C-HAQ score$ | 152 | 0.3 (0.5) | 0.1 | 0 | 0.4 |
| Morning stiffness, minutes | 146 | 14.6 (35) | 0 | 0 | 10 |
| ESR, mm/hour₤ | 145 | 20.8 (17.1) | 16 | 10 | 27 |
| C-reactive protein, mg/dl^ | 146 | 0.7 (1.4) | 0.1 | 0.1 | 0.8 |
| JADI-Articular score° | 155 | 2.3 (5.5) | 0 | 0 | 2 |
| JADI-Extra-articular score+ | 155 | 0.6 (1.2) | 0 | 0 | 1 |
| Poznanski score, units& | 84 | - 1.7 (2) | - 1.2 | - 3.2 | 0.1 |
| CHQ-Physical summary score# | 119 | 49.7 (7.6) | 52.6 | 47.2 | 55 |
| CHQ-Psychosocial summary score# | 119 | 48.9 (7.5) | 49.1 | 43 | 54.3 |
