Table 1.

Demographic Data by Posttraumatic Stress Symptom (PTSD) Status

	Control				Past PTSD				Current PTSD
Variable	n	%	M	SD	n	%	M	SD	N	%	M	SD	Statistical Test
Sample size	152	62.6			42	17.3			48	19.8
Age, years			45.1	9.78			44.9	10.23			41.2	8.30	F(2, 240) = 3.19*
Years of education			14.8	2.15			14.0	1.51			14.1	1.82	F(2, 230) = 4.14*
Male gender	137	89.5			37	88.1			40	83.3			χ2(2, N = 243) = 1.34
Ethnicity													χ2(6, N = 230) = 16.71*
Caucasian	99	69.2			21	52.5			27	57.5
Black	15	10.5			8	20.0			15	31.9
Latino	13	9.1			7	17.5			3	6.4
Other	16	11.2			4	10.0			2	4.3
Lifetime traumaa			70.2	127.4			122.9	163.7			143.0	185.2	χ2(2, N = 242) = 14.43***
Lifetime CAPSb			7.4	12.30			61.7	18.46			80.8	24.28	F(2, 240) = 452.30***
Current CAPSb			3.2	7.31			19.6	11.91			61.5	15.69	F(2, 240) = 584.75***

Note. CAPS = clinician administered PTSD scale.

^aBecause the number of trauma events is a count variable, we tested the effect of PTSD group on trauma events using negative binomial regression, and the test statistic is chi-square.

^bCAPS scores can be interpreted as follows: 0–19 for asymptomatic or few symptoms, 20–39 for mild or subthreshold PTSD, 40–59 for moderate or threshold-level PTSD, 60–79 for severe PTSD symptomatology, and ≥ 80 for extreme PTSD symptomatology (Weathers, Keane, & Davidson, 2001).

^*p < .05.

^**p < .01.

^***p < .001.