Participants: Seventy-one community-residing gay or bisexual HIV-positive male volunteers were compared with 17 HIV-negative male gay or bisexual subjects used as a control sample. The HIV-positive subjects were stratified with regard to severity of cognitive impairment into the following three subsamples: subjects who were cognitively normal (n=35), subjects with mild to moderate cognitive imp...

We used repeated cross-sectional data from intercept surveys conducted annually at lesbian, gay, and bisexual community events to investigate trends in club drug use in sexual minority men (N = 6489) in New York City from 2002 to 2007. Recent use of ecstasy, ketamine, and γ-hydroxybutyrate decreased significantly. Crystal methamphetamine use initially increased but then decreased. Use of cocain...

This work aims to understand a public policy of health equity related to sexualities that deviate from compulsory heterosexuality in a context of democratic crisis. For this, queer theory is used to analyze, in the light of categories such as power, resistance and transgression, what lies behind the discursive context of the health care policies of the Lesbian, Gay, Bisexual, and transgender (L...

A survey of individuals working in science, technology, engineering, and mathematics (STEM) fields who identify as lesbian, gay, bisexual, trans*, queer, or asexual (LGTBQA) was administered online in 2013. Participants completed a 58-item questionnaire to report their professional areas of expertise, levels of education, geographic location, and gender and sexual identities and rated their wor...

A multitype bisexual branching process is considered to model the behaviour of a Y-linked gene with two genotypes in a two-sex population. It is assumed perfect fidelity mating with preference of females for the males carrying certain allele of the gene. Under these assumptions, we study the rate of growth of each genotype on the event of non-extinction. The rate of growth of a genotype may dep...

BACKGROUND Lesbian and bisexual women may be at greater risk of breast cancer than heterosexual women during the premenopausal period due to disparities in risk factors. METHODS With 16 years of prospective data from a large cohort of U.S. women ages 25-58 years, we conducted a breast cancer risk assessment for 87,392 premenopausal women by applying the Rosner-Colditz biomathematical risk pre...

BACKGROUND With emerging opportunities for preventing human immunodeficiency virus (HIV) transmission, it remains important to identify those at greatest risk of infection and to describe and understand the contexts in which transmissions occur. Some gay and bisexual men with recently diagnosed HIV infection are initially unable to identify high-risk behaviors that would explain their HIV infec...

The authors explored relationships among childhood abuse, suicidal ideation, and sexual orientation of 18- to 30-year-old students enrolled in 2 San Diego area colleges, using responses from anonymous questionnaires. Sixty percent of the 138 eligible respondents were women, and 22% were self-identified gay/bisexual individuals. Women were more likely than men to report at least 1 form of emotio...

Male sailfin mollies Poecilia latipinna were tested in five different treatments that varied in the relative frequency of heterospecific gynogens (Amazon molly Poecilia formosa) to conspecific females to determine whether social interactions among males within a population causes some males to mate with heterospecific females. Male P. latipinna inseminated a significantly higher proportion of c...

Many studies have examined representations of gay, lesbian, bisexual, and transgender (LGBT) people in the U.S. media. Yet they have centered on portrayals of adults or teenagers. This investigation considered a potential LGBT population that has been neglected in media research, namely gender-variant, preadolescent children. Surveying the U.S. media at large but with an emphasis on television,...