Methodologic concerns in defining lesbian for health research.

Area of Science:

• Women's Health Research
• Sexual Orientation Studies
• Health Disparities

Background:

• Institute of Medicine highlights need for more research on lesbian health.
• Methodological challenges in defining sexual orientation among women identified.
• Previous research lacks standardized assessment of sexual orientation in women.

Purpose of the Study:

• To address the definition and assessment of sexual orientation among women.
• To compare different conceptual definitions of "lesbian" in research.
• To provide guidance for researchers on incorporating sexual orientation measures.

Main Methods:

• Utilized data from the Women Physicians' Health Study (N=4,501).
• Employed a questionnaire-based U.S. probability sample survey.
• Assessed sexual orientation using two items: current self-identity and current sexual behavior.

Main Results:

• High response rate (96%) for sexual orientation items.
• Cross-tabulation revealed multiple combinations of sexual identity and behavior.
• Three distinct definitions of "lesbian" (identity only, behavior only, both) were compared.

Conclusions:

• The definition of "lesbian" impacts study findings and requires careful consideration.
• Researchers should be cautious and deliberate when defining and assessing sexual orientation.
• Standardized methods for assessing sexual orientation are needed to advance lesbian health research.