Table 4 Results of the linear mixed effects model with the KINDL subscale scores children self-report as dependent variable controlled for time, age (in years), sex, educational level of the parents and diagnoses

Intercept

90.62

[62.40; 118.83]

 < 0.001

85.75

[60.86; 110.65]

 < 0.001

65.02

[38.14; 91.91]

 < 0.001

107.49

[79.39; 135.59]

 < 0.001

61.01

[30.49; 91.53]

 < 0.01

88.98

[60.90; 117.05]

 < 0.001

Time

 Baseline

Reference

Reference

Reference

Reference

Reference

Reference

 Follow-Up

-0.71

[-5.72; 4.29]

0.780

2.41

[-1.77; 6.59]

0.258

5.10

[0.78; 9.42]

0.021

-0.12

[-5.07; 4.83]

0.962

3.38

[-1.22; 7.98]

0.149

1.98

[-3.55; 7.50]

0.483

Group of the child

 Control

Reference

Reference

Reference

Reference

Reference

Reference

 Intervention

-2.43

[-8.59; 3.72]

0.439

3.58

[-1.84; 9.00]

0.195

2.85

[-3.04; 8.74]

0.343

3.81

[-2.37; 9.98]

0.227

2.51

[-4.17; 9.18]

0.462

0.41

[-5.83; 6.65]

0.898

Age of the child (in years)

-1.45

[-3.17; 0.26]

0.097

-0.79

[-2.3; 0.73]

0.308

-0.30

[-1.94; 1.34]

0.721

-2.16

[-3.88; -0.45]

0.014

0.74

[-1.12; 2.61]

0.434

-1.24

[-2.95; 0.48]

0.158

Sex of the child

 Female

Reference

Reference

Reference

Reference

Reference

Reference

 Male

4.68

[-1.17; 10.53]

0.117

-2.51

[-7.68; 2.65]

0.340

0.23

[-5.37; 5.82]

0.936

-4.13

[-9.97; 1.71]

0.166

-1.02

[-7.38; 5.34]

0.753

1.02

[-4.83; 6.86]

0.733

Educational level of the parent

 Low

Reference

Reference

Reference

Reference

Reference

Reference

 Medium

2.54

[-6.20; 11.27]

0.569

4.12

[-3.61; 11.86]

0.296

0.33

[-8.47; 9.14]

0.941

1.94

[-7.21; 11.09]

0.678

2.03

[-8.00; 12.05]

0.692

-3.11

[-12.23; 6.01]

0.504

 High

-0.25

[-8.49; 7.99]

-1.68

[-9; 5.63]

-2.83

[-11.21; 5.55]

0.00

[-8.69; 8.69]

1.000

-5.61

[-15.17; 3.95]

-4.46

[-13.08; 4.17]

HAP^b

-5.36

[-18.53; 7.82]

0.425

1.26

[-10.36; 12.88]

0.832

2.96

[-10.22; 16.15]

0.660

1.34

[-12.48; 15.17]

0.849

7.34

[-7.59; 22.28]

0.335

0.04

[-13.89; 13.96]

0.996

SLD^b

-1.22

[-13.66; 11.22]

0.847

-0.48

[-11.45; 10.50]

0.932

3.02

[-9.30; 15.34]

0.631

-1.62

[-14.53; 11.29]

0.805

0.98

[-12.99; 14.94]

0.891

1.31

[-11.67; 14.30]

0.843

NE^b

-4.76

[-17.69; 8.16]

0.470

-3.12

[-14.57; 8.33]

0.593

7.52

[-6.06; 21.11]

0.278

-4.46

[-18.60; 9.69]

0.537

0.16

[-15.30; 15.63]

0.983

0.73

[-13.38; 14.84]

0.919

CD^b

0.79

[-11.89; 13.47]

0.903

-0.50

[-11.69; 10.68]

0.930

1.05

[-11.74; 13.84]

0.872

-2.47

[-15.88; 10.95]

0.719

1.12

[-13.36; 15.61]

0.879

-4.84

[-18.36; 8.67]

0.483

Interaction: Time × Group

0.72

[-7.14; 8.57]

0.858

-2.75

[-9.32; 3.82]

0.412

-8.48

[-15.27; -1.70]

0.014

-0.36

[-8.12; 7.41]

0.928

-0.97

[-8.20; 6.26]

0.792

-5.93

[-14.58; 2.73]

0.180

Variance Intercept

158.20

135.75

168.13

158.20

234.97

122.68

AIC^c

2208.18

2134.42

2146.79

2186.87

2197.44

2220.16