Table 3.

Linear Mixed Models Linking Intervention Conditions to Disruptive and Prosocial Behaviors in Post-intervention

	Intervention					Intervention & Covariates
	β	SE	Df	p-value	ICC	β	SE	Df	p-value	ICC
Disruptive Behavior
Unconditional model
Random intercept
Intercept	3.19	0.2	17.55	<  0.01	0.09
Conditional Models
Covariate & intervention variables
Intercept	2.94	0.27	17.43	<  0.01	0.08	2.99	0.29	18.52	<  0.01	0.05
Intervention	0.52	0.39	16.31	0.19		0.39	0.40	18.27	0.34
Familial SES						0.27	0.42	98.93	0.52
Moderation models
Children’s sex
Intercept						2.52	0.34	39.80	<  0.01	0.03
Intervention						0.98	0.46	36.72	0.04
Familial SES						0.29	0.40	156.87	0.02
Children’s sex						0.93	0.41	118.14	0.46
Children’s sex * Intervention						−1.19	0.57	113.14	0.04
Familial SES
Intercept						3.01	0.30	17.86	<  0.01	0.05
Intervention						0.35	0.43	17.47	0.41
Familial SES						0.17	0.67	146.49	0.80
Familial SES * Intervention						0.17	0.86	110.96	0.84
Prososcial Behavior
Unconditional model
Random intercept
Intercept	7.08	0.16	14.95	<  0.01	0.08
Conditional Models
Covariate & intervention variables
Intercept	7.31	0.22	14.52	<  0.01	0.07	7.28	0.23	17.76	<  0.01	0.03
Intervention	−0.47	0.31	13.44	0.16		−0.46	0.31	17.45	0.16
Familial SES						−0.04	0.35	109.28	0.92
Moderation models
Children’s sex
Intercept						4.22	0.46	167.29	<  0.01	<  0.01
Children’s pre-intervention level of prosocial behaviours						0.46	0.06	144.98	<  0.01
Intervention						−0.17	0.37	251.65	0.65
Familial SES						0.09	0.3	20.02	0.77
Children’s sex						0.31	0.32	251.81	0.34
Children’s sex * Intervention						−0.24	0.42	251.25	0.57
Familial SES
Intercept						7.34	0.23	18.19	<  0.01	0.03
Intervention						−0.48	0.34	17.72	0.17
Familial SES						−0.06	0.45	110.91	0.89
Familial SES * Intervention						−0.07	0.61	94.10	0.91

Note. SES Socio-Economic Status, B Regression Coefficient, SE Standard Error, Df Degree of Freedom, ICC Intra-Class Correlation