Table 1.

Demographic and clinical characteristics.

		PTSD at 3-months post-injury			PTSD at 6-months post-injury
	N	No (n=344)	Yes (n=77)	p-value	No (n=351)	Yes (n=70)	p-value
Age (Mean (SD))	421	38.9 (16.5)	37.8 (14.2)	.70	39.2 (16.5)	36.6 (13.5)	.32
Years of Education (Mean (SD))	417	14.3 (2.8)	13.2 (2.2)	<.001	14.4 (2.7)	12.8 (2.5)	<.001
Patient Type	421			.61			.89
ED Discharge	175	140 (40.7%)	35 (45.5%)		145 (41.3%)	30 (42.9%)
Hospital admit no ICU	170	139 (40.4%)	31 (40.3%)		141 (40.2%)	29 (41.4%)
Hospital admit with ICU	76	65 (18.9%)	11 (14.3%)		65 (18.5%)	11 (15.7%)
Sex	421			.033			.039
Female	141	107 (31.1%)	34 (44.2%)		110 (31.3%)	31 (44.3%)
Male	280	237 (68.9%)	43 (55.8%)		241 (68.7%)	39 (55.7%)
Race	418			.054			<.001
White	309	255 (74.3%)	54 (72%)		264 (75.6%)	45 (65.2%)
Black	76	57 (16.6%)	19 (25.3%)		53 (15.2%)	23 (33.3%)
Other	33	31 (9.0%)	2 (2.7%)		32 (9.2%)	1 (1.5%)
Hispanic	419			.73			.86
No	349	287 (83.7%)	62 (81.6%)		292 (83.4%)	57 (82.6%)
Yes	70	56 (16.3%)	14 (18.4%)		58 (16.6%)	12 (17.4%)
Injury Cause	421			.024			.020
Road traffic incident	267	216 (62.8%)	51 (66.2%)		219 (62.4%)	48 (68.6%)
Incidental fall	91	82 (23.8%)	9 (11.7%)		83 (23.7%)	8 (11.4%)
Violence/assault	23	15 (4.4%)	8 (10.4%)		15 (4.3%)	8 (11.4%)
Other	40	31 (9.0%)	9 (11.7%)		34 (9.7%)	6 (8.6%)
Psychiatric History	421			<.001			.002
No	347	295 (85.8%)	52 (67.5%)		299 (85.2%)	48 (68.6%)
Yes	74	49 (14.2%)	25 (32.5%)		52 (14.8%)	22 (31.4%)
Prior TBI	420			.003			.019
No	276	237 (69.1%)	39 (50.7%)		239 (68.3%)	37 (52.9%)
Yes	144	106 (30.9%)	38 (49.4%)		111 (31.7%)	33 (47.1%)
CT	417			.26			.028
CT−	299	240 (70.4%)	59 (77.6%)		241 (69.5%)	58 (82.9%)
CT+	118	101 (29.6%)	17 (22.4%)		106 (30.6%)	12 (17.1%)
MRI	421			.80			.19
MRI−	234	190 (55.2%)	44 (57.1%)		190 (54.1%)	44 (62.9%)
MRI+	187	154 (44.8%)	33 (42.9%)		161 (45.9%)	26 (37.1%)