Table 1 Demographic characteristics of patients with JIA

Girls, n (%)

115 (67.7)

Onset age, years

6.0 (3.7; 9.0)

Study inclusion age, years, (min-max)

2; 17

Median (25%; 75%)

11.4 (7.6; 14.8)

JIA duration, years

3.8 (1.9; 6.5)

 Oligoarthritis

73 (42.9)

 Polyarthritis

61 (35.9)

 Systemic 5arthritis

16 (9.4)

 Enthesitis-related arthritis

20 (11.8)

 Corticosteroids, n (%)

43 (25.3)

 Methotrexate, n (%)

154 (90.6)

 Methotrexate duration, years.

2.5 (1.1; 5.3)

 Biologics, n (%)

82 (48.2)

 Biologic duration, years

1.3 (0.1; 4.2)