@文章{信息:doi/10.2196/17894，作者=“王子欣和杨，薛和莫，凤凰K H和方，袁和叶，全关玛丽和刘，约瑟夫T F”，标题=“社交媒体对中国男男性行为中性药物使用和化学性行为的影响:观察性前瞻性队列研究”，期刊=“J医学互联网研究”，年=“2020”，月=“7月”，日=“24”，卷=“22”，数=“7”，页=“e17894”，关键词=“社交媒体的影响;与性有关的药物使用;chemsex;与男性发生性关系的男性;前瞻性观察队列研究"，摘要="背景:性用药(SDU;在性交前或性交中使用任何精神活性物质)在男男性行为者(MSM)中普遍存在，并可能加剧这一关键人群中不断恶化的艾滋病毒流行。目的:这项观察性前瞻性队列研究调查了预测香港MSM样本6个月随访期内SDU发生的因素。我们假设，在随访期间，与SDU相关的认知将调节社交媒体/同性恋社交网络应用程序的影响与SDU之间的关系。方法:参与者是在中国香港说中文的男性，他们在过去一年中至少与一名男性进行过肛交。在完成基线电话调查的600名参与者中，407名(67.8 %)在6个月后完成了另一次电话调查。 Logistic regression models and path analysis were fitted. Results: At Month 6, 6.9{\%} (28/407) and 4.4{\%} (18/407) of participants reported SDU and chemsex during the follow-up period. After adjustment for significant baseline background variables (use of pre-exposure prophylaxis; history of HIV and other sexually transmitted infections; anal intercourse with nonregular male sex partners, condomless anal intercourse with men, multiple male sex partnerships, and SDU at baseline), three constructs of the Theory of Planned Behavior (TPB) were significantly associated with SDU during the follow-up period: (1) positive attitudes toward SDU (adjusted odds ratio [AOR] 1.19, 95{\%} CI 1.05-1.36), (2) perceived support for SDU from significant others (AOR 1.15, 95{\%} CI 1.01-1.30), and (3) perceived behavioral control of refraining from SDU (AOR 0.76, 95{\%} CI 0.59-0.98). Exposure to information supporting SDU on social media and gay social networking apps was also significantly associated with SDU (AOR 1.11, 95{\%} CI 1.01-1.22). Bootstrapping analyses indicated that social media influence was indirectly associated with SDU through TPB-related perceptions of SDU ($\beta$=.04; B=.002, 95{\%} CI 0.001-0.01). Conclusions: Social media and gay social networking apps may be a major source of influence on MSM's perceptions and actual behaviors related to SDU. ", issn="1438-8871", doi="10.2196/17894", url="//www.mybigtv.com/2020/7/e17894/", url="https://doi.org/10.2196/17894", url="http://www.ncbi.nlm.nih.gov/pubmed/32706705" }