TABLE 5.

Comparisons of the ILF-EXTERNAL scales and the corresponding parent forms (FBB-ADHS and FBB-SSV).

Scale	ILF-EXTERNAL: Mean (SD)	FBB (parents): Mean (SD)	r	Paired samples t-test	p	n
ADHD Symptoms	1.83 (0.48)	1.79 (0.56)	0.69***	t(425) = 1.95	0.051	426
– Inattention	1.98 (0.45)	2.03 (0.57)	0.58***	t(420) =−2.35	0.019	421
– Hyperactivity-Impulsivity	1.67 (0.71)	1.59 (0.73)	0.78***	t(422) = 3.78	<0.001	423
ADHD Functional Impairment	1.62 (0.57)	1.74 (0.69)	0.59***	t(400) =−4.16	<0.001	401
ODD/CD Symptoms−short version	0.84 (0.49)	0.97 (0.54)	0.74***	t(411) = −6.84	<0.001	412
– ODD Symptoms	1.12 (0.63)	1.38 (0.70)	0.72***	t(404) = −10.21	<0.001	405
– CD Symptoms−short version	0.40 (0.43)	0.42 (0.44)	0.65***	t(407) = −1.18	0.260	408
Disruptive Mood Dysregulation	1.06 (0.72)	1.21 (0.72)	0.67***	t(411) = −4.72	<0.001	412
Limited Prosocial Emotions	0.49 (0.41)	0.68 (0.54)	0.63***	t(406) = −8.96	<0.001	407
ODD/CD Functional Impairment	0.94 (0.78)	1.39 (0.82)	0.57***	t(380) = −11.75	<0.001	381

ADHD, attention-deficit/hyperactivity disorder; CD, conduct disorder; ODD, oppositional defiant disorder; ILF-EXTERNAL, Clinical Parent Interview for Diagnosing Externalizing Disorders in Children and Adolescents; FBB, parent-rated symptom checklists for the assessment of ADHD symptoms and symptoms of disruptive behavior disorders; ***p < 0.001.