Sources of Support for Studies That Inform Recommendations of the Community Preventive Services Task Force.

OBJECTIVES: The Community Preventive Services Task Force (CPSTF) makes evidence-based recommendations about preventive services, programs, and policies in community settings to improve public health. CPSTF recommendations are based on systematic evidence reviews. This study examined the sponsors (ie, sources of financial, material, or intellectual support) for publications included in systematic reviews used by the CPSTF to make recommendations during a 9-year period. METHODS: We examined systematic evidence reviews (effectiveness reviews and economic reviews) for CPSTF findings issued from January 1, 2010, through December 31, 2018. We assessed study publications used in these reviews for sources of support; we classified sources as government, nonprofit, industry, or no identified support. We also identified country of origin for each sponsor and the most frequently mentioned sponsors. RESULTS: The CPSTF issued findings based on 144 systematic reviews (106 effectiveness reviews and 38 economic reviews). These reviews included 3846 publications: 3363 publications in effectiveness reviews and 483 publications in economic reviews. Government agencies supported 57.1% (n = 1919) of publications in effectiveness reviews and 59.2% (n = 286) in economic reviews. More than 1500 study sponsors from 36 countries provided support. The National Institutes of Health was the leading sponsor for effectiveness reviews (21.3%; 718 of 3363) and economic reviews (16.2%; 78 of 480), followed by the Centers for Disease Control and Prevention (7.0%; 234 of 3363 effectiveness reviews and 14.8%; 71 of 480 economic reviews). CONCLUSIONS: The evidence base used by the CPSTF was supported by an array of sponsors, with government agencies providing the most support. Study findings highlight the need for sponsorship transparency and the role of government as a leading supporter of studies that underpin CPSTF recommendations for improving public health.

Masculinity and Barebacker Identification in Men who have Sex with Men.

PURPOSE: Barebacking is a term that is used to refer to intentional involvement in unprotected anal sex. This paper examines the relationship between masculinity and self-identification as a barebacker, and how these factors related to HIV risk practices in a sample of men who have sex with other men (MSM). METHOD: As part of the Men4Men Study, a brief Internet-based survey was completed in 2007 with English-speaking MSM aged 18+ who were not involved in a marital/romantic relationship at the time of interview. 886 participants were recruited by placing electronic postings and banner advertisements on Weblogs, social and sexual networking sites, and listservs frequented by MSM. RESULTS: A number of factors differentiated men who self-identified as barebackers from those who did not, and barebacking identity was linked with greater involvement in HIV risk practices. Multivariate analysis revealed that having a high level of masculinity was associated with a greater likelihood of self-identifying as a barebacker. CONCLUSIONS: HIV prevention and intervention efforts targeting MSM ought to address issues of self-identification as a barebacker as well as the extent to which men adhere to a masculine ideology.

Perceptions of HIV risk among internet-using, HIV-negative barebacking men.

The current study examines the risk perceptions of HIV-negative men who have sex with men (MSM) who use the Internet to seek unprotected sex. The research questions include the following: How great do these men perceive their HIV risk to be? Are their perceptions based on HIV knowledge or related to their risk behaviors? What factors are associated with greater/lesser perceived risk? Results revealed that more than half of the men believed that they had no or only a slight chance of contracting HIV. Risk perceptions were not related to HIV knowledge or to involvement in HIV risk practices. Four factors were identified as being associated with greater perception of HIV risk: self-identity as a sexual "bottom," having sex while high, greater use of bareback-focused websites, and younger age. Internet-using HIV-negative men who have sex with men tend to underestimate their risk for acquiring HIV, and interventions need to help them accurately assess their risk.