title: Effects of messaging about multiple biomedical and behavioral HIV prevention methods on intentions to use among US MSM: results of an experimental messaging study.
abstract: Combining multiple biomedical and behavioral HIV prevention approaches is a priority for at-risk populations such as men who have sex with men (MSM), and it is essential to understand how receiving messages about multiple approaches impacts attitudes and intentions for their use. We examined whether receiving combinations of different HIV prevention messages produced differences in perceived benefits and costs of condom use, and in intentions to use condoms and biomedical prevention approaches. MSM (N = 803) were recruited online and were randomly assigned to view informational messages about one, two, or four of the following prevention options: pre-exposure prophylaxis (PrEP), non-occupational post-exposure prophylaxis (nPEP), rectal microbicides, and condoms. The number of HIV prevention messages did not produce differential attitudes and intentions regarding condoms, nor did it produce changes in attitudes towards unprotected sex. Receiving multiple messages was associated with greater intentions to use PrEP and nPEP, but not rectal microbicides.
authors.affiliation: Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, 625 N Michigan Ave, Suite 2700, Chicago, IL, 60611, USA, brian@northwestern.edu.
authors.forename: Brian
authors.initials: B
authors.lastname: Mustanski
authors.forename: Daniel T
authors.initials: DT
authors.lastname: Ryan
authors.forename: Travis
authors.initials: T
authors.lastname: Sanchez
authors.forename: Craig
authors.initials: C
authors.lastname: Sineath
authors.forename: Kathryn
authors.initials: K
authors.lastname: Macapagal
authors.forename: Patrick S
authors.initials: PS
authors.lastname: Sullivan
mesh_terms: D017280:Condoms / Q000706:statistics & numerical data; D015658:HIV Infections / Q000517:prevention & control* / Q000523:psychology; D058015:Health Communication; D007722:Health Knowledge, Attitudes, Practice; D018451:Homosexuality, Male / Q000523:psychology*; D006801:Humans; D033182:Intention; D008297:Male; D056990:Post-Exposure Prophylaxis / Q000379:methods; D012309:Risk-Taking; D021841:Safe Sex; D012725:Sexual Behavior; D012747:Sexual Partners; D011795:Surveys and Questionnaires; D060145:Text Messaging; D014481:United States; D047568:Unsafe Sex / Q000523:psychology / Q000706:statistics & numerical data