Table 1 Baseline characteristic and clinical presentation of patients with SJIA

Median age at onset(y)

5.8 (4.4–9.5)

6.8 (4.7–9.6)

0.864

Sex, n (%)

 Male

17 (48.6)

74 (52.5)

0.679

 Female

18 (51.4)

67 (47.5)

Median follow-up duration(y)

4.6 (3.7–10.2)

6.3 (4.1–9.5)

0.859

Hepatosplenomegaly, n (%)

19 (54.3)

52 (36.9)

0.060

Arthritis, n (%)

30 (85.7)

112 (79.4)

0.399

 TMJ

1 (2.9)

3 (2.1)

1.000

 Cervical spine

10 (28.6)

19 (13.5)

0.031*

 Shoulder

11 (31.4)

28 (19.9)

0.140

 Elbow

10 (28.6)

32 (22.7)

0.465

 Wrists

16 (45.7)

47 (33.3)

0.171

 Hip

14 (40.0)

31 (22.0)

0.029*

 Knee

22 (62.9)

84 (59.6)

0.722

 Ankle

12 (34.3)

62 (44.0)

0.299

 Knuckle and toe joints

8 (22.9)

35 (24.8)

0.809

MAS, n (%)

14 (40.0)

33 (23.4)

0.047*

 One episode

10 (28.6)

29 (20.6)

0.307

 ≥ 2 episodes

4 (11.4)

4 (2.8)

0.083

Median JADAS-27 score

15.0 (11.0–18.13)

13.2 (9.3–16.5)

0.244