title: Early Adopters: Correlates of HIV Chemoprophylaxis Use in Recent Online Samples of US Men Who Have Sex with Men.
abstract: To date, little data on pre-exposure prophylaxis (PrEP) users outside of the clinical trial setting are available. A repeated cross-sectional survey of one of the largest social and sexual networking websites for men who have sex with men (MSM) in the United States was conducted in August 2013 (Wave 1) and January 2014 (Wave 2). Multivariable logistic regression models were used to assess factors associated with having heard of and having taken post-exposure prophylaxis (PEP) and PrEP in Wave 1 (N = 4043) and Wave 2 (N = 2737) separately. In Wave 1, 147 (3.6 %) and 61 (1.5 %) reported using PEP and PrEP, respectively, compared to 119 (4.4 %) and 62 (2.3 %) in Wave 2. Higher-risk sexual behaviors were associated with having taken PEP and PrEP, and previous PEP use was associated with having taken PrEP. Understanding factors that are associated with early use of PrEP may help inform wider utilization of PrEP by at risk MSM.
authors.affiliation: The Fenway Institute, Fenway Health, 1340 Boylston Street, Boston, MA, 02215, USA. kmayer@fenwayhealth.org.|Beth Israel Deaconess Medical Center, Boston, MA, USA. kmayer@fenwayhealth.org.|Harvard Medical School, Boston, MA, USA. kmayer@fenwayhealth.org.|Harvard T.C. Chan School of Public Health, Boston, MA, USA. kmayer@fenwayhealth.org.
authors.forename: Kenneth H
authors.initials: KH
authors.lastname: Mayer
authors.affiliation: The Fenway Institute, Fenway Health, 1340 Boylston Street, Boston, MA, 02215, USA.|Harvard T.C. Chan School of Public Health, Boston, MA, USA.
authors.forename: Catherine E
authors.initials: CE
authors.lastname: Oldenburg
authors.affiliation: On-Line Buddies, Cambridge, MA, USA.
authors.forename: David S
authors.initials: DS
authors.lastname: Novak
authors.affiliation: The Fenway Institute, Fenway Health, 1340 Boylston Street, Boston, MA, 02215, USA.
authors.forename: Steven A
authors.initials: SA
authors.lastname: Elsesser
authors.affiliation: The Fenway Institute, Fenway Health, 1340 Boylston Street, Boston, MA, 02215, USA.|Beth Israel Deaconess Medical Center, Boston, MA, USA.
authors.forename: Douglas S
authors.initials: DS
authors.lastname: Krakower
authors.affiliation: The Fenway Institute, Fenway Health, 1340 Boylston Street, Boston, MA, 02215, USA.|Brown University School of Public Health, Boston, MA, USA.
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Mimiaga
mesh_terms: D000328:Adult; D019380:Anti-HIV Agents / Q000008:administration & dosage*; D018890:Chemoprevention; D003430:Cross-Sectional Studies; D015658:HIV Infections / Q000517:prevention & control*; D007722:Health Knowledge, Attitudes, Practice; D018451:Homosexuality, Male / Q000706:statistics & numerical data*; D006801:Humans; D020407:Internet; D016015:Logistic Models; D008297:Male; D015999:Multivariate Analysis; D056990:Post-Exposure Prophylaxis; D065129:Pre-Exposure Prophylaxis; D012309:Risk-Taking; D012725:Sexual Behavior; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D014481:United States
chemical_list: D019380:Anti-HIV Agents
keywords: HIV prevention; Men who have sex with men; Post-exposure prophylaxis; Pre-exposure prophylaxis