. Author manuscript; available in PMC: 2017 Dec 1.

Published in final edited form as: J Am Acad Child Adolesc Psychiatry. 2016 Oct 4;55(12):1081–1089. doi: 10.1016/j.jaac.2016.09.503

Table 1.

Demographic and Clinical Characteristics of Participants

	Healthy Control Children (n=25)	PO-MDD (n=53)	Group Comparison
Age in Years; Mean(SD)	5.63 (1.02)	5.50 (.85)	t(82) = .61, p = .54
Gender (% Males)	64	66	χ²(1) = .034, p = .85
Ethnicity
% White	72	82
%Black	16	12
%Other	12	6	χ²(2) = 1.08, p = .58
Parental income; Mean(SD)	$70K ($26K)	$66K ($34K)	t(51.31)= .37 p = .69
Maternal BDI score; Mean(SD)	4.04(4.35)	10.17(7.10)	t(71.14)= −4.83, p < .001.
N of K-SADS MDD Symptoms Endorsed; Mean(SD)	0.60(.87)	5.66(1.57)	t(76.26) = −18.88, p < .001
Comorbidities
%ADHD	0	30	ns
%GAD	0	20
%ODD	0	52

Note: n=2 missing data for parental income of healthy control participants. ADHD = attention-deficit/hyperactivity disorder; BDI = Beck Depression Inventory; GAD = generalized anxiety disorder; K-SADS = Kiddie Schedule for Affective Disorders; MDD = major depressive disorder; PO-MDD = preschool-onset major depression; ODD = oppositional defiant disorder.