Table 3.

Simple Conditional HLM Results for Longitudinal Outcomes.

Panel A: Longitudinal Outcomes With Baseline through Follow-up Dataa
	Slope				Point-in-Time
	Response		Maintenance		12 Months		18 Months
	Coeff	P	Coeff	P	Coeff	P	Coeff	P
VADPRS: ADHD total	−3.31	.02	1.18	.08	−4.17	.08	−6.01	.10
VADPRS: ODD total	−1.79	.01	0.54	.14	−2.59	.03	−3.67	.03
PedsQL: total mean	4.11	.005	−0.75	.39	6.18	.03	9.91	.02
Panel B: Longitudinal Outcomes with Post-treatment and Follow-up Datab
	Slope		Point-in-Time
	Overall		6 Months		12 Months		18 Months
	Coeff (OR)	P	Coeff (OR)	P	Coeff (OR)	P	Coeff (OR)	P
IGAR ADHD	−0.14	.21	0.69	.01	0.55	.01	0.41	.08
IGAR ODD	−0.21	.08	0.72	.004	0.51	.01	0.30	.15
CGI-I response (≤2)	(0.66)	.38	(2.14)	.05	(1.41)	.35	—c	—c
VADPRS: ADHD remission (<18)d	(0.77)	.38	(2.50)	.07	(1.94)	.11	(1.50)	.42

Abbreviations: HLM, hierarchical linear models; Coeff, coefficient; VADPRS, Vanderbilt ADHD Diagnostic Parent Rating Scale; ADHD, attention deficit hyperactivity disorder; ODD, oppositional defiant disorder; PedsQL, Pediatric Quality of Life; OR, odds ratio; IGAR, Individualized Goal Achievement Rating; CGI-I, Clinical Global Impression Scale-Improvement.

^aTwo-level HLM model sets with piecewise slope.

^bFour-level HLM models with single slope.

^cCGI-I was not administered at 18 months.

^dNine participants with baseline scores of <18 on VADPRS were not included.