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

C-HAQ: Childhood Health Assessment Questionnaire; ESR: erythrocyte sedimentation rate; JADI: Juvenile Arthritis Damage Index; CHQ: Child Health Questionnaire.

^§On a 0–10 cm visual analogue scale (0 = best; 10 = worst);^$Range of 0 (best) to 3 (worst);^₤normal <15 mm/hour; ^normal <0.1 mg/dl;°range of 0 (best) to 72 (worst);⁺range of 0 (best) to 17 (worst);^&abnormal < – 2 units;^#mean ± SD norm based score for both physical and psychosocial scores: 50 ± 10.