title: Does a Video Improve Knowledge of HIV/AIDS and HIV Testing among a Global Internet Audience?
abstract: The objectives of this study were to determine if a video improved HIV/AIDS and HIV testing knowledge among a global sample of Internet users, to discern if this improvement was the same for English and Spanish speakers, and to ascertain if the video was efficacious for those with lower health literacy. A worldwide sample of English- or Spanish-speaking Internet users was solicited. Participants completed a 25-item questionnaire to assess their HIV/AIDS and HIV testing knowledge before and after watching the video. Mean scores on the questionnaire improved after watching the video for both English speakers (after: 19.6 versus before: 16.4; Δ = 3.2; 95% confidence interval [CI]: 2.8-3.5) and Spanish speakers (20.7 versus 17.3; Δ = 3.4; 95% CI: 3.0-3.8). There was no difference in improvement of scores between English and Spanish speakers (Δ = -0.24; 95% CI: -0.79 to 0.31), and this video was equally efficacious for those with lower and higher health literacy skills.
authors.affiliation: Brown University, Providence, RI, USA.
authors.forename: Winnie
authors.initials: W
authors.lastname: Shao
authors.affiliation: Department of Biostatistics, Center for Statistical Sciences, Brown University, Providence, RI, USA.
authors.forename: Wentao
authors.initials: W
authors.lastname: Guan
authors.affiliation: Department of Epidemiology, Brown University, Providence, RI, USA.
authors.forename: Melissa A
authors.initials: MA
authors.lastname: Clark
authors.affiliation: Department of Biostatistics, Center for Statistical Sciences, Brown University, Providence, RI, USA.
authors.forename: Tao
authors.initials: T
authors.lastname: Liu
authors.affiliation: Urban Health Research and Practice, Northeastern University, Boston, MA, USA.
authors.forename: Claudia
authors.initials: C
authors.lastname: Santelices
authors.affiliation: Urban Health Research and Practice, Northeastern University, Boston, MA, USA.
authors.forename: Dharma E
authors.initials: DE
authors.lastname: Cortes
authors.affiliation: Department of Emergency Medicine, Brown University, Providence, RI, USA rmerchant@lifespan.org.
authors.forename: Roland C
authors.initials: RC
authors.lastname: Merchant
mesh_terms: D000328:Adult; D003430:Cross-Sectional Studies; D005260:Female; D015658:HIV Infections; D007722:Health Knowledge, Attitudes, Practice; D057220:Health Literacy / Q000379:methods / Q000706:statistics & numerical data*; D006801:Humans; D020407:Internet; D007802:Language; D008297:Male; D011795:Surveys and Questionnaires; D014741:Video Recording / Q000706:statistics & numerical data*; D055815:Young Adult
keywords: HIV; Hispanic; Internet; World Wide Web; acquired immunodeficiency syndrome; global sample; health education; health literacy; survey; video–audio media