• Roopa Das, Dorothy A Machalek, Edmund G Molesworth, and Suzanne M Garland.
• Melbourne Medical School, University of Melbourne, Parkville, Australia.
• J. Med. Internet Res. 2017 Nov 17; 19 (11): e389.

BackgroundYoung men can be difficult to engage in health research using traditional methods of recruitment. Social networking sites are increasingly being used to recruit participants into health research, due to their cost effectiveness, overall generalizability, and wide reach.ObjectiveThe aim of this study was to determine the feasibility of using Facebook to recruit young Australian men into a human papillomavirus (HPV) prevalence study.MethodsWe recruited male permanent residents of Australia, aged 18 to 35 years, into the HPV in Young Males (HYM) study through targeted advertising placed on Facebook. Consenting participants completed an online questionnaire and provided a self-collected penile swab for HPV DNA detection and genotyping. We compared sociodemographic characteristics of the study population with those of the general Australian male population, based on Australian 2011 census data.ResultsBetween February 2015 and February 2017, targeted Facebook advertisements reached 1,523,239 men, resulting in 41,811 clicks through to the study website, with 1072 (2.56%) converting to lodgment of an expression of interest. Of these, 681 (63.53%) provided written informed consent and 535 (78.6% of recruited participants) completed all the study requirements. Reasons for participating in the study included altruism, past history of HPV, gaining more knowledge about HPV or the vaccine, working in the health industry, and the monetary compensation. The average advertising cost per completed study participant was Aus $48. Compared with the census population, HYM study participants were more likely to be Australian born (P<.001), be from Victoria (P=.003) or the Australian Capital Territory (P=.004), reside in a major city (P<.001), and have completed undergraduate (P<.001) or postgraduate education (P<.001). HYM study participants were less likely to report being a current smoker (P=.03), but were more likely to identify as bisexual or homosexual (294/529, 55.6%, P<.001), than the general population.ConclusionsUsing Facebook is a feasible and efficient strategy for the recruitment of men from across Australia for HPV testing. This method could be used for monitoring the impact of HPV vaccination. Additional targeting may achieve a sample that is broadly demographically representative of the Australian population. Future research should explore how the sexual risk behavior characteristics of populations recruited through Facebook compare with those of traditional recruitment methods.©Roopa Das, Dorothy A Machalek, Edmund G Molesworth, Suzanne M Garland. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 17.11.2017.

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