Sexual Orientation Assessment Protocol

Sexual orientation was assessed using survey responses concerning same-sex sexual behavior and was defined using responses to the questions: “How many people with opposite sex have you been sexually together with?” and “How many people with same sex have you been sexually together with?” Respondents were categorized into a dichotomous variable as either a sexual minority individual (i.e., with values 1 = At least one same-sex sexual partner) or as a heterosexual individual (i.e., 0 = No same-sex sexual partner). Individuals with no response to the questions or with response “0” to both questions were excluded from further analysis.