Table 1.

Sample Characteristics by Group.

		Control (n = 33)		Maltreated (n = 24)		Total
Category	Value	n	%	n	%	n	%	χ2	p
Sex	Male	14	42.4	8	33.3	22	38.6	0.18	.67
	Female	19	57.6	16	66.7	35	61.4
Race	White	12	36.4	4	16.7	16	28.1	6.70	.15
	Black	9	27.3	8	33.3	17	29.8
	Latino	6	18.2	5	20.8	11	19.3
	Asian	4	12.1	1	4.2	5	8.8
	Other	2	6.1	6	25.0	8	14.0
Parent education	High school or less	4	12.1	4	16.7	8	14.0	4.71	.19
	Some college	5	15.2	8	33.3	13	22.8
	College degree	15	45.5	5	20.8	20	35.1
	Graduate education	8	24.2	7	29.2	15	26.3

Continuous measures	M	SD	M	SD	M	SD	t	p
Age at scan	17.05	1.48	16.77	1.46	16.93	1.46	0.71	.482
Physical abuse	5.27	0.76	9.88	4.73	7.21	3.84	−4.72	<.001**
Sexual abuse	5.00	0.00	9.67	6.04	6.97	4.52	−3.79	.001**
Emotional abuse	6.24	1.44	12.88	4.46	9.04	4.50	−7.03	<.001**
Combined abuse	16.52	1.75	32.42	10.71	23.21	10.56	−7.20	<.001**
Community violence	45.18	11.53	48.67	12.11	46.65	11.80	−1.09	.279
Internalizing (Wave 2)	14.03	8.17	25.71	12.83	18.95	11.81	−3.92	<.001**
Externalizing (Wave 2)	9.82	6.73	18.00	10.11	13.26	9.19	−3.45	.001**
Internalizing (Wave 3)	12.54	10.11	22.71	9.07	16.90	10.85	−3.70	.001**
Externalizing (Wave 3)	9.25	6.28	16.48	6.48	12.35	7.26	−3.92	<.001**

^*p < .05.

^**p < .001.