TABLE 3. Hierarchical Regression Analyses of Variables Predicting Adaptive, Family, and Emotional Functioning in Children With Obsessive-Compulsive Disorder (OCD), Children With OCD Plus Attention Deficit Hyperactivity Disorder (ADHD), and Unaffected Comparison Subjects.

Functional Domain and Measure	Predictor
		Tourette's Disorder, Gender, Age			OCD			ADHD
	Model R2a	ΔR2b	F	df	ΔR2b	F	df	ΔR2b	F	df
Adaptive functioning
Vineland Adaptive Behavior Scales score
Communication	0.15	0.10	5.12**	3, 132	0.04	5.78*	1, 131	0.01	1.15	1, 130
Daily living	0.19	0.08	4.02**	3, 131	0.10	15.78***	1, 130	0.00	0.43	1, 129
Socialization	0.21	0.08	3.68*	3, 132	0.09	15.02***	1, 131	0.04	6.21*	1, 130
Child Behavior Checklist score
Activities	0.06	0.01	0.57	3, 158	0.03	5.27*	1, 157	0.02	2.64	1, 156
Social	0.21	0.07	3.62*	3, 154	0.05	9.53**	1, 153	0.09	16.38***	1, 152
School	0.25	0.15	9.74***	3, 165	0.06	13.06***	1, 164	0.04	7.95**	1, 163
Family Functioning
Family Environment Scale score
Conflict	0.12	0.08	4.82**	3, 159	0.01	1.01	1, 158	0.03	5.92*	1, 157
Cohesion	0.13	0.09	5.15**	3, 159	0.01	1.71	1, 158	0.03	5.99*	1, 157
Control	0.09	0.00	0.24	3, 159	0.04	6.75**	1, 158	0.04	7.53**	1, 157
Emotional functioning
Children's Depression Inventory score	0.29	0.08	4.85**	3, 169	0.17	39.16***	1, 168	0.04	8.30**	1, 167
Revised Child Manifest Anxiety Scale score	0.33	0.15	10.79***	3, 176	0.17	45.84***	1, 175	0.00	0.88	1, 174
Child Behavior Checklist internalizing problems score	0.45	0.13	8.27***	3, 168	0.28	79.89***	1, 167	0.04	10.65**	1, 166

^aTotal variance explained by the model including Tourette's disorder diagnosis, gender, age, OCD diagnosis, and ADHD diagnosis.

^bIncrements in explained variance.

^*p<0.05.

^**p<0.01.

^***p<0.001.