Table 5.

Hierarchical Linear Modeling Analysis Results: Parameter Estimates and Model Fit for Cohesion Over Time for Family-Therapy-Treatment Group

	Unconditional		Model 1		Model 2		Model 3
Fixed effects	Coef.	t-value	Coef.	t-value	Coef.	t-value	Coef.	t-value
Intercept	5.1	24.92***	4.33	18.01***	5.0	18.02***	5.0	17.92***
Abuse1					−1.2	−3.04**	−1.2	−3.04**
Abuse2					−1.18	−1.91	−1.18	−1.91
Change in use					.04	3.08**	.02	1.14
Slope (Time)			.51	5.45***	.51	5.45***	.51	5.58***
Abusel								ns
Abuse2								ns
Change in use							.018	2.10*
Random effects	Variance Component	χ2	Variance Component	χ2	Variance Component	χ2	Variance Component	χ2
Intercept	3.31	468.56***	4.10	337.07***	3.59	300.98***	3.53	296.60***
Slope			.41	180.91***	.40	180.93***	.37	172.91
Level 1	3.50		2.40		2.40		2.40

ns = not significant

^*p < .05.

^**p < .01.

^***p < .001.