Table 1.

Demographic Characteristics of Adolescents by BMI Classification

Characteristic	Healthy weight (n = 22,633)	Overweight (n = 4816)	Obese (n = 4321)	p
Percentage of sample	71.2	15.2	13.7
Age (years) M [SD]	14.0 [2.2]	13.6 [2.3]	13.7 [2.3]	<0.001
Sex (male) [%]	48.2	51.6	60.4	<0.001
Race, White non-Hispanic (%)	79.8	76.4	74.2	<0.001
Household incomea (%)				<0.001
Poor	11.6	15.5	21.6
Near poor	7.0	8.5	10.4
Not poor	81.4	75.9	68.0
Highest educationb (%)				<0.001
<12 years	1.6	2.9	4.1
12 years	11.2	14.9	21.0
>12 years	87.2	82.2	74.9
Bullying behaviors				<0.001
Neither bully perpetrator nor victim	78.8	72.7	63.7
Perpetrator	1.5	1.5	1.6
Victim	16.7	21.6	29.0
Both bully perpetrator and victim	3.0	4.2	5.7

Statistics represents between group differences. p < 0.05 in boldface.

^aIncome is grouped based on DHHS Federal Poverty Guidelines for households: “poor,” <133% poverty; “near poor,” ≥133% poverty but <185% poverty; “not poor,” ≥185% poverty.

^bHighest level of education in family.

SD, standard deviation.