First name
Michael
Middle name
P
Last name
Marshal

Title

Disparities in Body Mass Index Trajectories From Adolescence to Early Adulthood for Sexual Minority Women.

Year of Publication

2017

Date Published

2017 Sep 18

ISSN Number

1879-1972

Abstract

<p><strong>PURPOSE: </strong>We aimed to estimate group-based trajectories of body mass index (BMI) in a longitudinal cohort of young women and determine the association between sexual identity and BMI trajectory group, adjusting for obesity risk factors.</p>

<p><strong>METHODS: </strong>We analyzed data from females in waves I-IV of the National Longitudinal Study of Adolescent to Adult Health. Sexual identity was categorized as heterosexual, mostly heterosexual, bisexual, or lesbian (homosexual/mostly homosexual). We conducted group-based trajectory modeling of BMI with a censored normal distribution and a cubic relationship with age to identify three BMI trajectory groups. Multinomial logit regressions predicted the risk of trajectory membership associated with sexual identity, adjusting for background characteristics.</p>

<p><strong>RESULTS: </strong>At wave I, the mean (n&nbsp;= 7,801) age was 15.9&nbsp;years (95% confidence interval: 15.6-16.1). Subjects were 16.3% African-American; and 80.0% heterosexual, 15.9% mostly heterosexual, 2.5% bisexual, and 1.7% lesbian. Group-based trajectory modeling identified three BMI trajectory groups characterized as (1) minimal obesity (62.2%), (2) developing obesity (29.9%), and (3) progressive obesity (8.0%). In multinomial logit regressions adjusted for age, race, parental obesity and education, sexual abuse, household income, screen time, depressive symptoms, and rural residence, lesbian women had a nearly two-fold higher relative risk of being in the developing obesity trajectory group (relative risk ratio&nbsp;= 1.91, 95% confidence interval: 1.10-3.32) relative to the minimal obesity group, compared with heterosexual women.</p>

<p><strong>CONCLUSIONS: </strong>Lesbian women were at increased risk of membership in the developing obesity trajectory group compared with heterosexual women. Adjusting for obesity risk factors had minimal impact on the point estimates for this association.</p>

DOI

10.1016/j.jadohealth.2017.06.008

Alternate Title

J Adolesc Health

PMID

28935384

Title

Objective and Perceived Weight: Associations with Risky Adolescent Sexual Behavior.

Year of Publication

2016

Date Published

2016 Sep 8

ISSN Number

1931-2393

Abstract

<p><strong>CONTEXT: </strong>Studies have shown that obesity is associated with increased sexual risk-taking, particularly among adolescent females, but the relationships between obesity, perceived weight and sexual risk behaviors are poorly understood.</p>

<p><strong>METHODS: </strong>Integrative data analysis was performed that combined baseline data from the 1994-1995 National Longitudinal Study of Adolescent Health (from 17,606 respondents in grades 7-12) and the 1997 National Longitudinal Survey of Youth (from 7,752 respondents aged 12-16). Using six sexual behaviors measured in both data sets (age at first intercourse, various measures of contraceptive use and number of partners), cluster analysis was conducted that identified five distinct behavior clusters. Multivariate ordinal logistic regression analysis examined associations between adolescents' weight status (categorized as underweight, normal-weight, overweight or obese) and weight perception and their cluster membership.</p>

<p><strong>RESULTS: </strong>Among males, being underweight, rather than normal-weight, was negatively associated with membership in increasingly risky clusters (odds ratio, 0.5), as was the perception of being overweight, as opposed to about the right weight (0.8). However, being overweight was positively associated with males' membership in increasingly risky clusters (1.3). Among females, being obese, rather than normal-weight, was negatively correlated with membership in increasingly risky clusters (0.8), while the perception of being overweight was positively correlated with such membership (1.1).</p>

<p><strong>CONCLUSIONS: </strong>Both objective and subjective assessments of weight are associated with the clustering of risky sexual behaviors among adolescents, and these behavioral patterns differ by gender.</p>

DOI

10.1363/48e11416

Alternate Title

Perspect Sex Reprod Health

PMID

27608419

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