标题：Reimagining Health Communication: A Noninferiority Randomized Controlled Trial of Crowdsourced Intervention in China
作者：Tang, Weiming; Mao, Jessica; Liu, Chuncheng; Mollan, Katie; Zhang, Ye; Tang, Songyuan; Hudgens, Michael; Ma, Wei; Kang, Dianmin; Wei 更多 作者机构：[Tang, Weiming; Zhang, Ye; Tang, Songyuan] Southern Med Univ, Dermatol Hosp, Guangzhou 510095, Guangdong, Peoples R China.; [Tang, Weiming; Zhang, Y 更多
通讯作者：Tang, WM;Tang, WM
通讯作者地址：[Tang, WM]Southern Med Univ, Dermatol Hosp, Guangzhou 510095, Guangdong, Peoples R China;[Tang, WM]Univ North Carolina Chapel Hill Project China, Guan 更多
来源：SEXUALLY TRANSMITTED DISEASES
摘要：Background Crowdsourcing, the process of shifting individual tasks to a large group, may be useful for health communication, making it more people-centered. We aimed to evaluate whether a crowdsourced video is noninferior to a social marketing video in promoting condom use.; Methods Men who have sex with men (16 years old, had condomless sex within 3 months) were recruited and randomly assigned to watch 1 of the 2 videos in 2015. The crowdsourced video was developed through an open contest, and the social marketing video was designed by using social marketing principles. Participants completed a baseline survey and follow-up surveys at 3 weeks and 3 months postintervention. The outcome was compared with a noninferiority margin of +10%.; Results Among the 1173 participants, 907 (77%) and 791 (67%) completed the 3-week and 3-month follow-ups. At 3 weeks, condomless sex was reported by 146 (33.6%) of 434 participants and 153 (32.3%) 473 participants in the crowdsourced and social marketing arms, respectively. The crowdsourced intervention achieved noninferiority (estimated difference, +1.3%; 95% confidence interval, -4.8% to 7.4%). At 3 months, 196 (52.1%) of 376 individuals and 206 (49.6%) of 415 individuals reported condomless sex in the crowdsourced and social-marketing arms (estimated difference: +2.5%, 95% confidence interval, -4.5 to 9.5%). The 2 arms also had similar human immunodeficiency virus testing rates and other condom-related secondary outcomes.; Conclusions Our study demonstrates that crowdsourced message is noninferior to a social marketing intervention in promoting condom use among Chinese men who have sex with men. Crowdsourcing contests could have a wider reach than other approaches and create more people-centered intervention tools for human immunodeficiency virus control.