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Kugler, Kari C.; Vasilenko, Sara A.; Butera, Nicole M.; Coffman, Donna L. – Journal of Early Adolescence, 2017
Although early sexual initiation has been linked to negative outcomes, it is unknown whether these effects are causal. In this study, we use propensity score methods to estimate the causal effect of early sexual initiation on young adult sexual risk behaviors and health outcomes using data from the National Longitudinal Study of Adolescent to…
Descriptors: Sexuality, Young Adults, Adolescents, Probability
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Brooks-Russell, Ashley; Farhat, Tilda; Haynie, Denise; Simons-Morton, Bruce – Journal of Early Adolescence, 2014
Of the handful of national studies tracking trends in adolescent substance use in the United States, only the Health Behavior in School-Aged Children (HBSC) study collects data from 6th through 10th graders. The purpose of this study was to examine trends from 1998 to 2010 (four time points) in the prevalence of tobacco, alcohol, and marijuana use…
Descriptors: Trend Analysis, Gender Differences, Substance Abuse, Health Behavior