Table 3.

Logistic Regression: Demographic and violence exposure characteristics associated with past-6 month PTSD

	Step					Final model
	B	SE	t	OR	CI (95%)	B	SE	t	OR	CI (95%)
Step One
Age 11-12	-	-	-	-	-	-	-	-	-	-
14-15	0.26	0.24	1.08	1.30	0.81-2.10	−0.01	0.26	−0.04	0.99	0.60-1.64
16-17	0.87	0.24	3.66	2.38***	1.50-3.80	0.38	0.26	1.46	1.46	0.88-2.42
Gender	0.55	0.19	2.97	1.74**	1.21-2.50	1.00	0.37	2.70	2.71***	1.32-5.61
African American	0.71	0.24	2.92	2.04**	1.26-3.29	0.26	0.24	1.07	1.29	0.81-2.06
Hispanic	0.70	0.26	2.73	2.02**	1.22-3.34	0.46	0.28	1.63	1.58	0.91-2.75
Native American	−0.14	0.44	−0.31	0.87	0.37-2.08	−0.75	0.50	−1.49	0.47	0.18-1.26
Asian	0.59	0.66	0.89	1.81	0.49-6.71	0.77	0.78	0.99	2.15	0.47-9.92
Step Two
Sexual abuse	1.28	0.21	6.01	3.58***	2.36-5.43	1.74	0.43	4.02	5.71***	2.44-13.36
Physical abuse	1.05	0.19	5.51	2.85***	1.97-4.14	1.30	0.30	4.31	3.66***	2.03-6.61
Witnessing violence	1.01	0.20	5.00	2.75***	1.85-4.09	1.08	0.36	3.04	2.94**	1.47-5.90
Step Three
Gender X physical abuse						−0.29	0.39	−0.74	0.75	0.35-1.61
Gender X witnessing violence						−0.08	0.43	−0.20	0.92	0.40-2.13
Gender X sexual abuse						−0.98	0.50	−1.95	0.38*	0.14-1.01

Note. n = 3,907 (weighted).

^*p < .05

^**p < .01

^***p < .001.

Betas in the “Step” column represent those yielded for each individual step. PTSD = Posttraumatic Stress Disorder. The “age” variable has ages 11-12 as the reference category. All others are dichotomously coded, with a code of “0” reflecting that the demographic/exposure characteristic was not endorsed by participants and a code of “1” indicating that the characteristic was endorsed. SE = standard error; OR = odds ratio; CI = confidence interval.