Sample Characteristics: Means (SE) and Weighted Frequencies by Race/ethnic Subgroups, National Longitudinal Study of Adolescent Health.^a.

Abbreviations: SE, standard error; BMI, body mass index; HS, high school.

****

<0.0001;

***

<0.01;

**

<0.05;

*

<0.1, P-value comparing Hispanic and Asian subgroups to whites.

a

Weighted for national representation, standard errors corrected for survey design effects of multiple stage cluster sampling.

b

Screen time = hours of TV, video, and computer game use per week; estimates averaged across waves (wave II–IV).

c

Physical activity = weekly bouts of moderate to vigorous physical activity; estimates averaged across waves (wave II–IV).

d

Current smoking: any cigarette smoking in previous 30 days; adolescence: age <18; adulthood: age > = 18.