Adolescent health brief
Estimating Population Size and Demographic Characteristics of Lesbian, Gay, Bisexual, and Transgender Youth in Middle School

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Abstract

Purpose

To estimate the size and demographic characteristics of the lesbian, gay, bisexual, and transgender youth populations using data from the 2011 Youth Risk Behavior Survey (YRBS) administered in San Francisco Unified School District middle schools.

Methods

The YRBS was administered to a stratified random sample of 2,730 youth (grades 6–8) across all 22 public middle schools in San Francisco. Cross-tabulations using complex samples analyses were used to derive population estimates and confidence intervals.

Results and conclusions

Results show that 3.8% of middle school students identify as lesbian, gay, or bisexual, and 1.3% of middle school students identify as transgender. To improve our understanding of the size of these populations across the nation, researchers conclude it is imperative that all YRBS administration sites include items on sexual orientation and gender identity as they would any other demographic item, such as race/ethnicity, sex, or age. The current lack of reliable data on the size and characteristics of the lesbian, gay, bisexual, and transgender youth population limits the capacity of policy makers, administrators, and practitioners to address their needs.

Section snippets

Methods

Using a stratified random sampling design, the 2011 YRBS was administered to 2,730 youth (grades 6–8) across all 22 public middle schools in San Francisco in compliance with the CDC's administration guidelines and state regulations on parent consent/notification. The process yielded a 74% survey completion rate, surpassing the CDC's 60% criteria for the generation of weighted data. CDC statisticians calculated sampling weights, strata, and primary sampling unit statistics. Cross-tabs using

Measures

Following the CDC guidelines, standard YRBS demographic items (e.g., sex, race/ethnicity, age, and grade) were included in the analyses if no fewer than 100 respondents were represented [8]. Sexual orientation was measured using the item, “Which of the following best describes you?” and the response set “heterosexual (straight); gay or lesbian; bisexual; and not sure.” Transgender-inclusive gender was measured with the item, “What is your gender?” and the response set “female; male; and

Results

Population estimates show 3.8% of students in SFUSD middle schools identify as LGB (Table 1). Within the 3.8% of LGB students, 1.7% identify as gay or lesbian and 2.1% as bisexual. Another 12.1% of students responded they were “not sure” about their sexual orientation. Results also show 1.3% of students identify as transgender, resulting in a weighted population estimate of 137 transgender youth. Across available demographic variables, the proportion of LGB and transgender youth appeared to

Discussion and Conclusions

The population estimates derived in this study clearly demonstrate the presence of LGBT students at the middle school level. The large proportion of students (12.1%) who report being “unsure” of their sexual orientation is likely owing to a combination of factors, including the variability of developmental trajectories across youth; their social, cultural, and familial contexts; and differences in youths' understanding and interpretation of the survey item. Additional research is needed on the

Acknowledgments

The authors gratefully acknowledge the San Francisco Unified School District's School Health Programs staff; its director Kim Coates; and program managers Kevin Gogin and Kim Levine for their invaluable contributions to and support of this study. Points of view or opinions expressed in this document are those of the authors and do not necessarily represent the official position or policies of the San Francisco Unified School District.

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