Baseline

1

2

3

4

5

6

p*

Hours in bed

4.5

(0 - 24)

0 (0 - 14)

0 (0 - 12)

2 (0 - 24)

2.5

(0 - 27)

4 (0-24)

4 (0 - 24)

0.006

Hours of absence from school/work

4 (0 - 24)

0 (0 - 12)

0 (0 - 12)

0 (0 - 12)

0 (0 - 27)

0 (0 - 24)

0 (0 - 24)

0.000

Number of

analgesic tablets

4 (1 - 2)

0 (0 - 7)

1.5 (0 - 7)

2 (0 - 7)

2 (0 - 7)

2 (0 - 7)

3 (0 - 7)

0.000