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. Author manuscript; available in PMC: 2009 Dec 10.
Published in final edited form as: J Am Acad Child Adolesc Psychiatry. 2004 Oct;43(10):1215–1224. doi: 10.1097/01.chi.0000134489.58054.9c

Table 2.

Prevalence of substance use disorder categories by sex and agea

Males (N=1143) Females (N=631)
Substance Use
Disorderb 		10–13 yrs
(N=313)		 14–15 yrs
(N=348)		 16+ yrs
(N=482)		 F-tests
of agec 		Protected tests
of age		 10–13 yrs
(N=55)		 14–15 yrs
(N=340)		 16+ yrs
(N=236)		 F-tests
of agec 		Protected tests
of age
N % % % F value p value N % % % F value p value
Group 1 583 72.58 49.67 45.80 Reference
Groupc 		-------- -------- 340 69.46 54.98 51.54 Reference
Groupc 		-------- --------
Group 2 53 2.37 2.68 6.62 5.56 0.00 16+>10–13 25 5.22 3.00 4.69 0.63 0.53
Group 3 243 14.59 24.72 24.43 10.98 0.00 16+>10–13; 14–15 >10–13 113 12.52 17.82 20.81 1.66 0.19
Group 4 194 9.63 20.38 20.48 12.55 0.00 16+>10–13; 14–15 >10–13 110 6.79 18.71 17.64 2.58 0.08
Group 5 70 0.84 2.55 2.66 8.45 0.00 16+>10–13; 14–15>10–13 43 6.01 5.49 5.31 0.04 0.96
Total d 1143 100.01 100.00 99.99 631 100.00 100.00 99.99
a

Each cell is weighted to reflect the population of the detention center; al categories are mutually exclusive.

b

Group 1 = no disorder, Group 2 = alcohol use disorder only, Group 3 = marijuana use disorder only, Group 4 = both alcohol and marijuana use disorders, and Group 5 = other illicit drug use disorders whether or not alcohol or marijuana use disorders are also present.

c

Tests of race/ethnicity compare African Americans, non-Hispanic whites and Hispanics in Groups 2 through 5 to Group 1 (no disorder) All tests of race/ethnicity are within sex.

d

Total percents do not all sum to 100% due to rounding