Search Results
Author: Lin, Haiqun
Resulting in 4 citations.
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Biello, Katie Brooks Ickovics, Jeannette R. Niccolai, Linda Lin, Haiqun Kershaw, Trace |
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Racial Differences in Age at First Sexual Intercourse: Residential Racial Segregation and the Black-White Disparity Among U.S. Adolescents Public Health Reports 128,S1 (March-April 2013): 23-32. Also: http://www.publichealthreports.org/issuecontents.cfm?Volume=128&Issue=7 Cohort(s): NLSY97 Publisher: Association of Schools of Public Health Keyword(s): Adolescent Sexual Activity; Age at First Intercourse; Census of Population; Pregnancy, Adolescent; Racial Differences; Residential Segregation; Sexual Activity; Sexually Transmitted Diseases (STDs) Permission to reprint the abstract has not been received from the publisher. Objectives. The age of adolescents at first sexual intercourse is an important risk factor for sexually transmitted diseases (STDs) and adolescent pregnancy. Black adolescents are at higher risk than white adolescents for first sexual intercourse at younger ages as well as STDs and pregnancy. Individual- and family-level factors do not fully explain this disparity. We examined whether five dimensions of black-white residential racial segregation can help explain the racial disparity in age at first sexual intercourse. Methods. Using the National Longitudinal Survey of Youth 1997 and U.S. Census 2000 data, we performed multiple hierarchical discrete time-to-event analyses on a nationally representative cohort of adolescents followed since 1997. Although the cohort study is ongoing, we used data from 1997 through 2005. Results. Concentration and unevenness significantly modified the association of race and age at first sexual intercourse. However, stratified results suggested differences in the effect of race on age at first sexual intercourse at each level of segregation across dimensions of segregation. Conclusions. Residential racial segregation may modify the black-white disparity in risk of first sexual intercourse at younger ages, but these associations are complex. Future studies should be conducted to elucidate the causal mechanisms. |
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Bibliography Citation
Biello, Katie Brooks, Jeannette R. Ickovics, Linda Niccolai, Haiqun Lin and Trace Kershaw. "Racial Differences in Age at First Sexual Intercourse: Residential Racial Segregation and the Black-White Disparity Among U.S. Adolescents." Public Health Reports 128,S1 (March-April 2013): 23-32.
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| 2. |
Biello, Katie Brooks Niccolai, Linda Kershaw, Trace S. Lin, Haiqun Ickovics, Jeannette R. |
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Residential Racial Segregation and Racial Differences in Sexual Behaviours: An 11-year Longitudinal Study of Sexual Risk of Adolescents Transitioning to Adulthood Journal of Epidemiology and Community Health 67,1 (January 2013): 28-34. Also: http://jech.bmj.com/content/67/1/28.abstract Cohort(s): NLSY97 Publisher: BMJ Publishing Group, Ltd. - British Medical Journal Publishing Group Keyword(s): Racial Differences; Sexual Behavior; Sexually Transmitted Diseases (STDs) Permission to reprint the abstract has not been received from the publisher. Background: Determining the underlying causes of racial disparities in sexually transmitted infections (STIs) is important. In the USA, rates of the most common STIs range from 5 to 20 times higher for African–Americans compared to Caucasians, and the health consequences of STIs can be serious. Residential racial segregation results in very different contexts for individuals and may be an important determinant of sexual risk. The purpose of this study was to examine how segregation and race interact to impact the age trajectory of sexual risk behaviours. Methods: Using 11 years of data from the National Longitudinal Survey of Youth 1997 (1997–2007) and 2000 Census data, the authors performed three-level hierarchical linear regression to examine the associations between hypersegregation, race and a sexual risk behaviour index among black and white non-Hispanic adolescents as they transition to adulthood. Results: Through most of the teenage years, African–Americans are at higher sexual risk than Caucasians. However, by age 19, Caucasians are at higher risk. Hypersegregation was not associated with increased sexual risk index score on average and did not impact the trajectory of the race–sexual risk association. Conclusions: The authors did not find any evidence that hypersegregation was associated with the sex risk index or that it modified the race–sex risk association as individuals got older. Future studies should examine whether segregation is associated with other causes of STI/HIV acquisition risk, such as sexual network patterns. |
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Bibliography Citation
Biello, Katie Brooks, Linda Niccolai, Trace S. Kershaw, Haiqun Lin and Jeannette R. Ickovics. "Residential Racial Segregation and Racial Differences in Sexual Behaviours: An 11-year Longitudinal Study of Sexual Risk of Adolescents Transitioning to Adulthood ." Journal of Epidemiology and Community Health 67,1 (January 2013): 28-34.
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| 3. |
Sipsma, Heather L. Ickovics, Jeannette R. Lin, Haiqun Kershaw, Trace |
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Future Expectations Among Adolescents: A Latent Class Analysis American Journal of Community Psychology 50,1-2 (September 2012): 169-181. Also: http://www.springerlink.com/content/a16u01682300063x/ Cohort(s): NLSY97 Publisher: Springer Keyword(s): Adolescent Behavior; Delinquency/Gang Activity; Expectations/Intentions; Sexual Behavior; Substance Use Permission to reprint the abstract has not been received from the publisher. Future expectations have been important predictors of adolescent development and behavior. Its measurement, however, has largely focused on single dimensions and misses potentially important components. This analysis investigates whether an empirically-driven, multidimensional approach to conceptualizing future expectations can substantively contribute to our understanding of adolescent risk behavior. We use data from the National Longitudinal Survey of Youth 1997 to derive subpopulations of adolescents based on their future expectations with latent class analysis. Multinomial regression then determines which covariates from Bronfenbrenner’s ecological systems theory are associated with class membership. After modeling these covariates, we examine whether future expectations is associated with delinquency, substance use, and sexual experience. Our analysis suggests the emergence of four distinct classes labeled the Student Expectations, Student/Drinking Expectations, Victim Expectations, and Drinking/Arrest Expectations classes according to their indicator profiles. These classes differ with respect to covariates associated with membership; furthermore, they are all statistically and differentially associated with at least one adolescent risk behavior. This analysis demonstrates the additional benefit derived from using this multidimensional approach for studying future expectations. Further research is needed to investigate its stability and role in predicting adolescent risk behavior over time. |
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Bibliography Citation
Sipsma, Heather L., Jeannette R. Ickovics, Haiqun Lin and Trace Kershaw. "Future Expectations Among Adolescents: A Latent Class Analysis ." American Journal of Community Psychology 50,1-2 (September 2012): 169-181.
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| 4. |
Sipsma, Heather L. Ickovics, Jeannette R. Lin, Haiqun Kershaw, Trace |
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The Impact of Future Expectations on Adolescent Sexual Risk Behavior Journal of Youth and Adolescence 44,1 (January 2015): 170-183. Also: http://link.springer.com/article/10.1007/s10964-013-0082-7 Cohort(s): NLSY97 Publisher: Springer Keyword(s): Age at First Birth; Contraception; Expectations/Intentions; Modeling, Latent Class Analysis/Latent Transition Analysis; Sexual Behavior; Sexually Transmitted Diseases (STDs) Permission to reprint the abstract has not been received from the publisher. Rates of STIs, HIV, and pregnancy remain high among adolescents in the US, and recent approaches to reducing sexual risk have shown limited success. Future expectations, or the extent to which one expects an event to actually occur, may influence sexual risk behavior. This prospective study uses longitudinal data from the National Longitudinal Survey of Youth 1997 (n = 3,205 adolescents; 49.8 % female) to examine the impact of previously derived latent classes of future expectations on sexual risk behavior. Cox regression and latent growth models were used to determine the effect of future expectations on age at first biological child, number of sexual partners, and inconsistent contraception use. The results indicate that classes of future expectations were uniquely associated with each outcome. The latent class reporting expectations of drinking and being arrested was consistently associated with the greatest risks of engaging in sexual risk behavior compared with the referent class, which reported expectations of attending school and little engagement in delinquent behaviors. The class reporting expectations of attending school and drinking was associated with having greater numbers of sexual partners and inconsistent contraception use but not with age at first biological child. The third class, defined by expectations of victimization, was not associated with any outcome in adjusted models, despite being associated with being younger at the birth of their first child in the unadjusted analysis. Gender moderated specific associations between latent classes and sexual risk outcomes. Future expectations, conceptualized as a multidimensional construct, may have a unique ability to explain sexual risk behaviors over time. Future strategies should target multiple expectations and use multiple levels of influence to improve individual future expectations prior to high school and throughout the adolescent period. |
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Bibliography Citation
Sipsma, Heather L., Jeannette R. Ickovics, Haiqun Lin and Trace Kershaw. "The Impact of Future Expectations on Adolescent Sexual Risk Behavior." Journal of Youth and Adolescence 44,1 (January 2015): 170-183.
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