Table 2.

Prevalence (%) of DSM-IV Posttraumatic Stress Disorder by Sex and Race/Ethnicity ^a

	%	F	Analysis df	p
Males (N=531)	10.9
Race/Ethnicity		2.26b	2, 521	0.106
African American (N=247)	9.2
Non-Hispanic White (N=107)	8.0
Hispanic (N=177)	19.6
Age		0.76	2, 521	0.466
10–13 (N=156)	6.8
14–15 (N=151)	11.8
16+ (N=224)	11.0
Females (N=361)	14.7
Race/Ethnicity		0.46c	2, 358	0.629
African American (N=239)	14.7
Non-Hispanic White (N=47)	10.5
Hispanic (N=75)	16.9
Age		0.84	2, 358	0.4337
10–13 (N=33)	13.1
14–15 (N=194)	12.8
16+ (N=134)	17.9
Total (N=892)	11.2	1.19d	1, 880	0.275

^aPosttraumatic Stress Disorder could not be determined for four subjects due to missing data. One male and one female who self-identified as “other” race/ethnicity were excluded from the analyses; therefore the N for this table is 892. Each cell is weighted to reflect the population of the detention center. Because females make up only 7.3% of the detention center population, overall rates cannot be computed by averaging males’ and females’ rates. This is also true for race/ethnicity and age. To protect against Type I error, each group of tests is Bonferroni-adjusted beginning with the lowest alphas to the highest; for this reason, the probability of Type I error may not be a monotonic function of the F statistics. Tests of differences by race/ethnicity and age within sex were not calculated because cell sizes were too small.

^bTest of differences by race/ethnicity among males.

^cTest of differences by race/ethnicity among females.

^dTest of differences by sex.