Table 2 Differences in pain and health status of all participating children

Arthritis activity: Composite disease activity score

2.8 (2.5)

2.00

0.65 (1.00)

0.00

Z = −4.51

<0.001

0.47

Functional disability: CHAQ dis. index

0.25 (0.37)

0.10

0.30 (0.32)

0.10

Z = −0.01

0.99

0.001

Pain intensity: Mean pain diary score

0.86 (0.88)

0.60

1.03 (1.19)

0.69

Z = −0.49

0.62

0.05

Number (%)

Number (%)

Chi ² -test

p-values

Effect sizes (phi)

Patients with no pain reported in the pain diary

1 (2.0%)

13 (31.7%)

χ²(1) = 15.27

<0.001

0.41

Patients with daily pain reported in the pain diary

12 (24.0%)

12 (29.3%)

χ²(1) = 0.32

0.64

0.06