Table 1.

Demographics

	High-ADHD n=149	Low-ADHD n=867	Overall Sample N=1,016
Age at Kindergarten	5.3 (0.33)	5.4 (0.32)	5.4 (0.32)
Sex	64.4% male*	46.6% male	50.8% male
Child Race	76.5% Caucasian	86.5% Caucasian	85% Caucasian
Child Hispanic Origins	6.7% Hispanic	5.5% Hispanic	5.7% Hispanic
Maternal Education	13.7*†	14.75†	14.59†
Family Income	$44,133 (33,205)*	$57,567 (41,842)	$55,594 (40,951)
Hours mother works per week	36.46 (19.54)	33.55 (18.71)	33.98 (18.86)

Note. Standard deviations presented in parentheses.

^*Significant difference determined by independent samples T-test or Chi-Square

^†Mat. education was measured using a categorical scale. Relevant anchors are: 12=H.S. graduate or GED; 14=Some college, AA or vocational degree; 16=Bachelor’s degree.