Table 2

Sample Sizes and Characteristics

Sample
ABCDEF
Size180371135138410141
Grade(s)4-56-7-888812
Gender: girls/boysa83/8861/5668/6385/50213/19794/43
RegionNENENESouthNENE
LocationUrbanUrbanbUrbanbUrbanUrban/suburbanUrban/suburban
Free lunch89%31%c45%c27%n/adn/a
Race/Ethnicity
White11%32%40%36%62%59%
Black53%29%23%60%6%-
Hispanic31%15%12%2%4%-
Other5%24%e25%e2%28%f41%f

The demographics for each longitudinal sample is for the first time point.

aGender was missing for 21 subjects.

bSame school system;

cIn grade 6, 22% of students indicated “I don't know” whether they received free lunch, whereas only 7% of grade 8 students didn't know.

dn/a = not available.

eBiracial, other, don't know.

fIncludes Black, Hispanic, and other.

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