Table 1 Clinical characteristics of the juvenile idiopathic arthritis (JIA) cohort and control group

Female sex

96

68

(71)

109

77

(71)

Fulltime school or work

94

73

(78)

109

86

(79)

Age at visit, years, median (IQR)

96

22.7

(18.7–26.2)

109

23.5

(20.2–26.7)

Age at disease onset, years, median (IQR)

96

6.4

(2.7–11.7)

–

–

Disease duration at visit, years, median (IQR)

96

16.1

(14.2–17.1)

–

–

Oligoarticular JIA at onset

96

51

(53)

–

–

Oligoarticular JIA at visit^a

96

45

(47)

–

–

Not in remission at visit^b

96

53

(55)

–

–

DMARDs and/or biologics at visit

96

34

(35)

–

–

HAQ, median (IQR)

96

0

(0.0–0.125)

–

–

Women: hormonal contraceptives

68

42

(62)

74

48

(65)

Women: days since LMP, median (IQR)

54

14

(6–26)

69

19

(9–39)

Alcohol consumption at day of visit^c

95

0

(0)

109

2

(2)

Use of tobacco at day of visit^c

93

21

(23)

106

22

(21)

Consumption of coffee/tea/cola at day of visit^c

95

36

(38)

109

28

(26)

Pain or psychotropic medication at day of visit^d

95

4

(4)

107

2

(2)

SF-36 PCS, mean (± SD)

96

51.1

(± 9.5)

109

55.1

(± 7.9)

SF-36 MCS, mean (± SD)

96

47.7

(± 11.6)

109

47.5

(± 9.7)