Table 4 Main and interaction effects in the linear mixed models of the intervention on anxiety and depression

Intervention

− 0.39

[− 1.1, 0.3]

0.35

− 1.1

0.273

Assessment 2

0.24

[− 0.22, 0.71]

0.24

1.03

0.304

Assessment 3

0.51

[0.05, 0.98]

0.24

2.17

0.03

Intervention × Assessment 2

0.24

[− 0.49, 0.97]

0.37

0.65

0.516

Intervention × Assessment 3

0.17

[− 0.56, 0.89]

0.37

0.45

0.656

Random effect

Variance

S.D.

 Participant (Intercept)

6.94

2.63

 Residual

8.49

2.91

Model fit

 R²

Marginal

Conditional

0.25

0.59

Intervention

0.27

[− 0.41, 0.95]

0.35

0.77

0.444

Assessment 2

0.12

[− 0.44, 0.67]

0.29

0.4

0.686

Assessment 3

0.85

[0.29, 1.41]

0.29

2.98

0.003

Intervention × Assessment 2

0.048

[− 0.83, 0.92]

0.45

0.11

0.915

Intervention × Assessment 3

0.29

[− 0.58, 1.17]

0.45

0.65

0.514

Random effect

Variance

S.D.

 Participant (Intercept)

2.55

1.6

 Residual

12.37

3.52

Model fit

 R²

Marginal

Conditional

0.5

0.58