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. aWeighted for national representation, standard errors corrected for survey design effects of multiple stage cluster sampling. bScreen time = hours of TV, video, and computer game use per week; estimates averaged across waves (wave II–IV). cPhysical activity = weekly bouts of moderate to vigorous physical activity; estimates averaged across waves (wave II–IV). dCurrent smoking: any cigarette smoking in previous 30 days; adolescence: age <18; adulthood: age > = 18.