Table 2

Results of grouped t tests and Mann-Whitney U tests to show t or z values, degrees of freedom, and p values for the differences in the changes in scores from baseline to follow up between the control and intervention group

6 month follow up12 month follow up
ECBI
Intensity score t = 2.3, 89 df, p = 0.024 t = 0.81, 84 df, p = 0.42
Problem scoret = 0.06, 73 df, p = 0.95t = 0.14, 73 df, p = 0.89
SDQ
Conduct problem score t = 2.2, 80 df, p = 0.034 z = −0.15, p = 0.88
Emotional scorez = −0.57, p = 0.57z = −0.12, p = 0.91
Hyperactivityz = −0.56, p = 0.57z = −0.26, p = 0.80
Peer problemsz = −0.21, p = 0.83z = −0.99, p = 0.32
Prosocial scorez = 1.47, p = 0.14z = −0.24, p = 0.81
Total difficultiest = 1.19, 77 df, p = 0.34t = 0.29, 75 df, p = 0.77
Impactz = 0.74, p = 0.46z = −0.44, p = 0.66
GHQ
Totalt = 0.94, 80 df, p = 0.24z = −0.60, p = 0.55
Anxietyz = −0.10, p = 0.92z = −0.77, p = 0.44
Somatic symptomsz = −0.75, p = 0.45z = −0.32, p = 0.75
Depressionz = −1.68, p = 0.09z = −2.25, p = 0.025
Social dysfunctionz = −1.27, p = 0.20z = −1.7, p = 0.87
PSI
Totalt = 1.3, 82 df, p = 0.20t = −0.40, 81 df, p = 0.69
Parent domaint = 0.72, 82 df, p = 0.48t = 0.69, 81 df, p = 0.49
Difficult child domaint = 0.89, 82 df, p = 0.38t = −0.10, 81 df, p = 0.93
Parent-child interactiont = 1.75, 82 df, p = 0.09t = −0.10, 81 df, p = 0.93
SES t = 0.20, 82 df, p = 0.84t = −0.27, 81 df, p = 0.79