Table 1.

Demographic profile of the sample and comparisons between intervention and control groups.

Variable		Sample of posttested students	Intervention	Control	Sample used in analysis
Gender	Male	43.2%	41.8%	43.9%	42.8%
	Female	56.8	58.2	56.1	57.2
Race	White	78.0%	78.6%	77.2%	78.0%
	Black/African American	6.3	6.5	6.3	6.5
	American Indian/Alaska Native	7.7	6.8	8.4	7.5
	Asian	5.1	5.0	5.3	5.1
	Native Hawaiian/Other Pacific Islander	2.9	3.1	2.8	2.9
Ethnicity:	Hispanic	25.4%	24.2%	25.7%	24.8%
	Not Hispanic	74.6	75.8	74.3	75.2
Age*	11 years	2.7%	4.1%	1.2%	2.8%
	12 years	25.5	25.3	26.8	26.1
	13 years	49.2	50.7	48.2	49.1
	14 years	22.1	22.4	20.2	21.5
	15 years	0.5	0.4	0.6	0.5

^*There were no significant differences (p<0.05) between groups intervention and control groups at baseline or between the sample at baseline and the sample used in the analysis.