Assessing the Impact of a Social Marketing Campaign on Program Outcomes for Users of an Internet-Based Testing Service for Sexually Transmitted and Blood-Borne Infections: Observational Study

Mark Gilbert   ^{1, 2} , MD ;   Travis Salway   ^{1, 2} , PhD ;   Devon Haag   ¹ , MSc ;   Michael Kwag   ³ , BA ;   Joshua Edward   ⁴ , PhD ;   Mark Bondyra   ¹ ;   Joseph Cox   ⁵ , MD ;   Trevor A Hart   ^{6, 7} , PhD ;   Daniel Grace   ⁷ , PhD ;   Troy Grennan   ^{1, 8} , MD ;   Gina Ogilvie   ^{1, 2} , MD ;   Jean Shoveller   ² , PhD

¹ British Columbia Centre for Disease Control, Vancouver, BC, Canada

² School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada

³ Community Based Research Centre for Gay Men's Health, Vancouver, BC, Canada

⁴ Health Initiative for Men, Vancouver, BC, Canada

⁵ Department of Epidemiology, Biostatistics and Occupational Health, Faculty of Medicine, McGill University, Montreal, QC, Canada

⁶ Department of Psychology, Ryerson University, Toronto, ON, Canada

⁷ Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada

⁸ Division of Infectious Diseases, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada