Outcome & informant

Control group

Treatment group


\( {\upalpha}_2^{\left(\mathrm{CG}\right)} \)

\( {\upalpha}_3^{\left(\mathrm{CG}\right)} \)

\( {\upalpha}_2^{\left(\mathrm{TG}\right)} \)

\( {\upalpha}_3^{\left(\mathrm{TG}\right)} \)


KSADS blinded clinician

Inattention

−0.42^{*}

− 0.42^{*}

− 0.42^{*}

− 0.42^{*}

Hyp/Imp

− 0.25^{*}

− 0.25^{*}

− 0.25^{*}

− 0.25^{*}

ODD

− 0.16^{*}

− 0.53^{*}

− 0.16^{*}

− 0.16^{*}

SDQ mother

Hyperactivity

−0.30^{*}

− 0.30^{*}

− 0.30^{*}

− 0.30^{*}

Conduct

− 0.05

−0.24^{*}

− 0.24^{*}

− 0.24^{*}

Emotional

− 0.19^{*}

− 0.19^{*}

− 0.19^{*}

− 0.19^{*}

HSQ mother

Total

−0.27^{*}

− 0.27^{*}

− 0.27^{*}

− 0.27^{*}

FIQ mother

Social

−0.14^{*}

− 0.14^{*}

− 0.14^{*}

− 0.14^{*}

Negative

− 0.20^{*}

− 0.20^{*}

− 0.20^{*}

− 0.20^{*}

Positive

0.04

0.04

0.04

0.04

SDQ teacher

Hyperactivity

−0.11^{*}

− 0.11^{*}

− 0.11^{*}

− 0.11^{*}

Conduct

− 0.17^{*}

− 0.17^{*}

− 0.17^{*}

− 0.17^{*}

Emotional

− 0.13^{*}

− 0.13^{*}

− 0.13^{*}

− 0.13^{*}

 Note. Results concern the final model of a series of nested piecewise linear latent growth models (within and betweengroup analysis). In the case of equal coefficients (i.e., α_{2} and α_{3} in TG and CG), change rates did not significantly differ across treatment groups and/or steps and were constrained to be equal. \( {\upalpha}_2^{\left(\mathrm{CG}\right)} \) = mean of latent slope factor representing average change in CG during Step 1 (T1 to T2); \( {\upalpha}_3^{\left(\mathrm{CG}\right)} \) = mean of latent slope factor indicating average change in CG during Step 2 (T2 to T3); \( {\upalpha}_2^{\left(\mathrm{TG}\right)} \) = mean of latent slope factor representing average change in TG during Step 1 (T1 to T2); \( {\upalpha}_3^{\left(\mathrm{TG}\right)} \) = mean of latent slope factor indicating average change in TG during Step 2 (T2 to T3); KSADS KiddieSadsPresent and Lifetime Version with the scales Inattention, Hyperactivity/Impulsivity and Oppositional defiant disorder, SDQ Strengths and Difficulties Questionnaire with the scales Hyperactivity, Conduct Problems and Emotional Symptoms, HSQ Home Situation Questionnaire, FIQ Family Impact Questionnaire with the scales Impact on Social Life, Positive Feelings Toward Child and Negative Feelings Toward Child
 ^{*}p < .05