Sell was one of the first to estimate the prevalence of lesbians, gays and bisexuals in a probability sample of the United States, United Kingdom and France. His work critically examines the variables used to measure health disparities.
Sell is a collaborator on a federally funded scientific study of social diffusion in online media for reaching hidden communities. He is also the lead investigator for a study of social networks as a means to sample gay men and collect health information. He has researched and published on the history and best practices of sampling homosexuality and has created an assessment of sexual orientation (the Sell Scale). He serves as a consultant to an ever-increasing number of surveys and programs that have begun to collect sexual orientation data. Sell also established the website GayData.org.
Sell directs Drexel's certificate program in LGBT Health.
More information about Sell
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