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Author: Steward-Streng, Nicole R.

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1.	Manlove, Jennifer S. Steward-Streng, Nicole R. Peterson, Kristen Scott, Mindy E. Wildsmith, Elizabeth
1.	Racial and Ethnic Differences in the Transition to a Teenage Birth in the United States Perspectives on Sexual and Reproductive Health 45,2 (June 2013): 89-100. Also: http://onlinelibrary.wiley.com/doi/10.1363/4508913/abstract Cohort(s): NLSY97 Publisher: Alan Guttmacher Institute Keyword(s): Age at First Birth; Age at First Intercourse; Childbearing, Adolescent; Contraception; Delinquency/Gang Activity; Ethnic Differences; Family Environment; Immigrants; Modeling, Hazard/Event History/Survival/Duration; Peers/Peer influence/Peer relations; Racial Differences; School Performance; Sexual Experiences/Virginity Permission to reprint the abstract has not been received from the publisher. Data from the National Longitudinal Survey of Youth 1997 cohort were used to link characteristics of white, black, U.S.-born Hispanic and foreign-born Hispanic adolescents to teenage childbearing. Following a sample of 3,294 females aged 12-16 through age 19, discrete-time logistic regression analyses were used to examine which domains of teenagers' lives were associated with the transition to a teenage birth for each racial and ethnic group, and whether these associations help explain racial and ethnic and nativity differences in this transition.
	Bibliography Citation Manlove, Jennifer S., Nicole R. Steward-Streng, Kristen Peterson, Mindy E. Scott and Elizabeth Wildsmith. "Racial and Ethnic Differences in the Transition to a Teenage Birth in the United States." Perspectives on Sexual and Reproductive Health 45,2 (June 2013): 89-100.

2.	Manlove, Jennifer S. Steward-Streng, Nicole R. Welti, Kate
2.	Transitions onto and off of Hormonal Methods among Teens and Young Adults in the U.S. Presented: New Orleans LA, Population Association of America Annual Meeting, April 2013 Cohort(s): NLSY97 Publisher: Population Association of America Keyword(s): Contraception; Education; Modeling, Growth Curve/Latent Trajectory Analysis; Racial Differences; Sexual Activity Permission to reprint the abstract has not been received from the publisher. Consistent use of hormonal contraceptive methods can help reduce high rates of unintended pregnancy among teens and young adults in the U.S. We use 10 years of data from the National Longitudinal Survey of Youth, 1997 cohort, to example transitions onto and off of hormonal methods among teens and young adults. Preliminary analyses find that 76% of our sample used hormonal methods at some point, but 56% of these women subsequently switched to a less effective method or no method. Preliminary discrete-time event history analyses indicate that greater educational engagement and performance are associated with greater odds of transitioning onto and staying on hormonal methods, while race/ethnic minorities have lower odds. Having multiple sexual partners, a casual relationship or a partner of a different race/ethnicity are associated with reduced odds of hormonal method use. We will run Latent Class Growth Models to better understand patterns of method use over time.
	Bibliography Citation Manlove, Jennifer S., Nicole R. Steward-Streng and Kate Welti. "Transitions onto and off of Hormonal Methods among Teens and Young Adults in the U.S." Presented: New Orleans LA, Population Association of America Annual Meeting, April 2013.

3.	Scott, Mindy E. Steward-Streng, Nicole R. Barry, Megan C.
3.	Neighborhood, Family and School Environments: Associations with the Timing of Adolescent First Sex Presented: Washington, DC, Population Association of America Annual Meetings, March 31-April 2, 2011 Cohort(s): NLSY97 Publisher: Population Council Keyword(s): Adolescent Sexual Activity; Age at First Marriage; Family Environment; Geocoded Data; Neighborhood Effects; School Quality A major focus of policy and research is on delaying the timing of first sex to help reduce high rates of teenage pregnancy and STDs in the U.S. This study uses data from Rounds 1-8 of the National Longitudinal Survey of Youth (NLSY97) to examine whether and how different adolescent environments including neighborhood, family, school, and the surrounding physical environment are associated with an earlier timing of first sex. We also examine whether micro-level factors (e.g., parent involvement) are more or less protective against early sexual experience in more disadvantaged neighborhoods. County-level indicators of neighborhood disadvantage (e.g., poverty, unemployment, single motherhood, educational attainment) are used. Preliminary results suggest that many contexts matter for the timing of adolescent sex (e.g., neighborhood, parent involvement, family structure, youth's perceptions of their school and physical environments, parent background) and that these contexts vary depending on the level of neighborhood disadvantage.
	Bibliography Citation Scott, Mindy E., Nicole R. Steward-Streng and Megan C. Barry. "Neighborhood, Family and School Environments: Associations with the Timing of Adolescent First Sex." Presented: Washington, DC, Population Association of America Annual Meetings, March 31-April 2, 2011.

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