Reaching African-American men on the down low : sampling hidden populations: implications for HIV prevention

Studies on the impact of the HIV epidemic among African-American men who have sex with men (MSM) have largely neglected men who self-identify as heterosexual but engage in same-sex behavior. These men, commonly referred to as men on the down low, pose formidable challenges to researchers conducting prevention studies. This article addresses the methodological issues that create limitations in sampling this population. It presents a novel approach to locate and access these men, describes the success in using this approach, and suggests implications for future research employing this sampling approach.