TABLE 1.

Demographic Characteristics of Children With and Without ADHD

	Children Without Diagnosed ADHD	Children With Diagnosed ADHD	Children With ADHD Not on Medication	Children With ADHD on Medication
n	710 166	32 773	6408	26 365
Age, y, median (IQR)	7 (5–9) *	8 (6–9) *	8 (6–9)*	8 (6–10)*
% Male	50.1*	73.7*	71.2*	74.3*
% Junior enlisted military parent	2.86*	4.55*	4.7	4.5
% Married parents	83.5*	85.1*	85.3	85.1
% Firstborn	39.3*	42.2*	43.3	42.2

Comparisons made between patients with and without ADHD and those with and without ADHD on medication were performed by using either the χ² test for categorical variables or Wilcoxon rank-sum test for continuous variables. *P < .001. IQR, interquartile range.