Hendrick C Emily, Cance Jessica Duncan, Maslowsky Julie
Health Behavior and Health Education, Department of Kinesiology and Health Education, The University of Texas at Austin, 2109 San Jacinto Blvd., UT Mail Code: D3700, Austin, TX, 78712-1415, USA.
J Youth Adolesc. 2016 May;45(5):916-27. doi: 10.1007/s10964-016-0413-6. Epub 2016 Jan 14.
Girls with early pubertal timing are at elevated risk for teenage childbearing; however, the modifiable mechanisms driving this relationship are not well understood. The objective of the current study was to determine whether substance use, perceived peer substance use, and older first sexual partners mediate the relationships among girls' pubertal timing, sexual debut, and teenage childbearing. Data are from Waves 1-15 of the female cohort of the National Longitudinal Surveys of Youth 1997 (NLSY97), a nationwide, ongoing cohort study of U.S. men and women born between 1980 and 1984. The analytic sample (n = 2066) was 12-14 years old in 1997 and ethnically diverse (51 % white, 27 % black, 22 % Latina). Using structural equation modeling, we found substance use in early adolescence and perceived peer substance use each partially mediated the relationships among girls' pubertal timing, sexual debut, and teenage childbearing. Our findings suggest early substance use behavior as one modifiable mechanism to be targeted by interventions aimed at preventing teenage childbearing among early developing girls.
青春期提前的女孩生育青少年子女的风险较高；然而，导致这种关系的可改变机制尚未得到充分理解。本研究的目的是确定物质使用、感知到的同伴物质使用以及年龄较大的首个性伴侣是否介导了女孩青春期时间、首次性行为和生育青少年子女之间的关系。数据来自1997年全国青年纵向调查（NLSY97）女性队列的第1 - 15波，这是一项针对1980年至1984年出生的美国男女的全国性、正在进行的队列研究。分析样本（n = 2066）在1997年时年龄为12 - 14岁，种族多样（51%为白人，27%为黑人，22%为拉丁裔）。使用结构方程模型，我们发现青春期早期的物质使用和感知到的同伴物质使用各自部分介导了女孩青春期时间、首次性行为和生育青少年子女之间的关系。我们的研究结果表明，早期物质使用行为是针对预防发育较早女孩生育青少年子女的干预措施可靶向的一种可改变机制。
