Table 2 Quantitative outcome measure summaries at each time point and by randomised arms

WEBWBS^a

14

43.6 (8.6)

13

40.2 (8.9)

11

44.6 (9.4)

11

40.8 (9.3)

10

45.5 (9.2)

11

43.0 (6.7)

FAD^b

14

13

11

10

9

10

Problem solving

2.0 (0.5)

2.3 (0.5)

1.8 (0.3)

2.1 (0.4)

1.9 (0.5)

2.2 (0.3)

Communication

2.2 (0.4)

2.4 (0.6)

2.0 (0.4)

2.3 (0.5)

2.0 (0.4)

2.2 (0.5)

Roles

2.5 (0.3)

2.5 (0.4)

2.3 (0.4)

2.6 (0.5)

2.4 (0.3)

2.5 (0.5)

Affective responsiveness

2.0 (0.6)

2.4 (0.8)

1.8 (0.5)

2.3 (0.7)

1.7 (0.5)

2.2 (0.6)

Affective involvement

2.3 (0.4)

2.3 (0.4)

2.1 (0.4)

2.3 (0.3)

2.2 (0.5)

2.3 (0.5)

Behaviour control

2.0 (0.3)

2.0 (0.6)

1.7 (0.3)

1.9 (0.5)

1.8 (0.3)

1.7 (0.5)

general functioning

2.1 (0.4)

2.2 (0.6)

1.8 (0.3)

2.4 (0.6)

1.7 (0.4)

2.2 (0.3)

CBQ-parent^c

14

13

11

10

9

10

Appraisal of young person

13.0 (9.4)

13.2 (6.8)

7.0 (6.2)

13.8 (7.0)

5.8 (5.4)

10.5 (8.6)

Appraisal of dyad

4.6 (4.1)

4.6 (3.5)

1.5 (1.9)

5.7 (4.1)

2.6 (2.9)

6.1 (6.7)

CBQ-adolescent^c

14

13

11

11

10

11

Appraisal of parent

10.6 (9.2)

7.0 (6.3)

5.3 (7.4)

5.6 (5.6)

5.3 (7.0)

8.0 (6.0)

Appraisal of dyad

5.2 (4.4)

3.7 (3.4)

2.5 (2.9)

4.5 (3.0)

3.0 (3.3)

3.6 (3.9)

EQ-5D-Y

n

Frequency

 Mobility

14

13

11

11

10

11

 No problems

13

11

10

9

9

8

 Some problems

1

2

1

2

1

3

 A lot of problems

0

0

0

0

0

0

 Self care

14

13

11

11

10

11

 No problems

13

11

10

10

9

9

 Some problems

1

2

1

1

1

2

 A lot of problems

0

0

0

0

0

0

 Performing usual activities

14

13

11

11

10

0

 No problems

11

4

9

3

5

5

 Some problems

2

9

2

5

5

4

 A lot of problems

1

0

0

2

0

2

 Pain or discomfort

14

13

11

11

10

11

 No problems

8

7

8

7

6

6

 Some problems

6

4

3

4

3

5

 A lot of problems

0

2

0

0

1

0

 Feeling worried, sad or unhappy

14

13

11

11

10

11

 No problems

8

4

8

4

5

2

 Some problems

4

7

3

3

4

8

 A lot of problems

2

2

0

4

1

0

EQ-5D-3L

n

Frequency

 Mobility

14

12

11

10

9

10

 No problems

14

12

11

10

8

10

 Some problems

0

0

0

0

1

0

 A lot of problems

0

0

0

0

0

0

 Self care

14

12

11

10

9

10

 No problems

14

12

11

10

9

10

 Some problems

0

0

0

0

0

0

 A lot of problems

0

0

0

0

0

0

 Performing usual activities

14

12

11

10

9

10

 No problems

13

8

10

9

9

7

 Some problems

1

4

1

1

0

3

 A lot of problems

0

0

0

0

0

0

 Pain or discomfort

14

12

11

10

9

10

 No problems

10

9

9

8

6

6

 Some problems

4

3

1

2

2

4

 A lot of problems

0

0

1

0

1

0

 Feeling worried, sad or unhappy

14

13

11

11

10

11

 No problems

5

4

9

5

7

3

 Some problems

8

7

2

4

2

4

 A lot of problems

1

1

0

1

0

3