. Author manuscript; available in PMC: 2023 Feb 1.

Published in final edited form as: Clin Neuropsychol. 2021 Jul 8;36(2):264–286. doi: 10.1080/13854046.2021.1944671

Table 1.

Sample demographic characteristics.

		White		Black
	N	(n = 2,754)		(n = 1,189)		χ²
Child sex (% male)	3943	62.5%		65.7%		3.57
Diagnostic status (% with ADHD)	3943	43.0%		45.4%		1.79
Insurance type (% with commercial insurance)	3336	83.1%		57.8%		231.88^***
		M	SD	M	SD	t
Child age (years)	3943	10.49	3.02	10.70	2.97	2.10
CLDQ Reading¹	3943	2.87	1.28	2.96	1.25	2.06^*
CLDQ Math¹	3943	2.92	1.22	3.11	1.22	4.48^***

Note.

^***

p<.001,

p<.05.

CLDQreading and math scores are represented by the mean of informants’ responses to Likert scale items.

ADHD = Attention-Deficit/Hyperactivity Disorder; CLDQ = Colorado Learning Difficulties Questionnaire. Comparisons between groups for categorical variables were conducted using chi-square tests (χ²) and for continuous variables were conducted as independent-samples t-tests.