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. Author manuscript; available in PMC: 2016 Nov 19.

Published in final edited form as: Subst Use Misuse. 2015 Nov 19;50(12):1518–1528. doi: 10.3109/10826084.2015.1023449

Table 2.

Individual Student Characteristics

	Middle School (n = 12,798) N (%)	HS 9^th and 10^th (n = 6,189) N (%)	HS 11^th and 12^th (n = 4,628) N (%)
Male	5,961 (49%)	2,746 (46%)	1,947 (44%)
Female	6,287 (51%)	3,261 (54%)	2,534 (57%)
African American students	7,081 (56%)	3,194 (52%)	2,230 (49%)
White	4,893 (38%)	2,569 (42%)	2,107 (46%)
Other	767 (6%)	361 (6%)	248 (5%)
Smoked cigarettes in last 12 months	1,882 (15%)	1,573 (24%)	1,293 (28%)
Used alcohol in last 12 months	4,070 (32%)	3,310 (51%)	2,730 (59%)
Used marijuana in last 12 months	1,266 (10%)	1,553 (24%)	1,335 (29%)
Used no substances in last 12 months	8,186 (65%)	2,564 (42%)	1,705 (38%)
Used one substance in last 12 months	2,418 (19%)	1,500 (25%)	1,118 (25%)
Used two substances in last 12 months	1,273 (10%)	1,062 (18%)	924 (20%)
Used three substance in last 12 months	711 (6%)	898 (15%)	771 (17%)

Note: HS = high school.