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. Author manuscript; available in PMC: 2010 Mar 1.
Published in final edited form as: Prev Sci. 2009 Mar;10(1):33–40. doi: 10.1007/s11121-008-0112-y

Table 1.

School Sample Characteristics (N=1,710)

Characteristic Percent 95% Confidence Interval
Region1
 Northeast 15.7 13.4, 17.9
 Midwest 31.2 28.8, 33.6
 South 35.5 32.8, 38.2
 West 17.6 15.6, 19.6
Population density of geographic area served2
 Urban 21.6 20.4, 22.7
 Suburban 30.9 29.6, 32.2
 Rural 47.6 46.0, 49.2
School poverty (% of students eligible for free or reduced-price lunch)2
 Low (0–14%) 22.7 20.3, 25.2
 Medium (15–39%) 28.4 26.5, 30.4
 High (> 39%) 48.8 46.2, 51.4
School size (number of students in grades 5–8)2
 Small (20–199) 31.6 29.4, 33.7
 Medium (200–599) 39.2 36.8, 41.6
 Large (600+) 29.3 27.4, 31.1
Race/ethnicity composition2
 Majority white 75.6 73.2, 78.1
 Majority African American 10.0 8.0, 12.0
 Majority Hispanic 7.2 6.0, 8.4
 Other majority 1.9 1.1, 2.6
 No majority 5.3 4.2, 6.4

Note. N is unweighted and proportions calculated using weighted data.

1

Defined by U.S. Census regions.

2

Defined based on school data available from the 2004–2005 Common Core of Data school file.