Neuropsychological and neurophysiological benefits from white noise in children with and without ADHD

Table 1 Means, standard deviations and group comparison for estimated IQ, age and parent-rated CBCL T-scores

Measure	Group				t test and ANOVA
	TDCN = 17		ADHDN = 13		t	p
	Mean	SD	Mean	SD	t	p
Estimated IQ	111.2	6.8	102.9	9.9	−2.72	.01*
Age	9.2	1.3	8.5	1.2	−1.66	.11
CBCL^a						p^b
Affective problems^a	56.3	6.8	62.8	7.0	2.39	.14
Anxiety problems^a	58.1	7.1	59.6	7.9	.53	.99
Somatic problems^a	56.8	5.6	55.9	6.9	−0.36	1
ADHD problems^a	53.2	5.5	64.8	7.6	4.51	<.01*
Oppositional defiant problems^a	56.9	7.7	60.3	9.5	1.00	.99
Conduct problems^a	58.4	8.9	62.7	9.5	1.18	.95

* p value indicating significant difference between groups; overall α = .05
^a Child behavior checklist; T-scores
^b p values below are corrected for multiple comparisons (Bonferroni correction)