%0期刊文章%@ 2368- 7959% I JMIR出版物%V 8%卡塔尔世界杯8强波胆分析 N 6% P e15551% T类型和YouTube视频发布在回应学生自杀危机的影响:香港大学香港赛马会自杀研究及预防中心，中国香港薄扶林沙顺道5号2楼(香港)，电话:852 28315232，sfpyip@hku.hk %K自杀%K自杀预防%K社交媒体%K信息流行病学%K互联网%K数字健康%K YouTube %K影响评估%K网络可视化%D 2021 %7 18.6.2021 %9原创论文%J JMIR Ment health %G英语%X背景:YouTube上有与自杀有关的视频，但它们的特征和影响很少被研究。目的:本研究旨在研究为回应2015-2016学年香港学生自杀事件而发布的YouTube视频，并评估这些视频的影响。方法:在YouTube上进行关键字搜索，识别相关视频。通过内容分析对视频类型进行了检查，具体按上传视频的人、视频中使用的演示格式、视频是否由上传者原创以及视频是否披露了上传者自杀的个人经历来对视频进行分组。视频的影响是根据触及范围(通过观看次数衡量)、参与度(通过评论数量衡量)和洞察力(衡量每个视频的评论在多大程度上揭示了个人自杀风险和寻求帮助的态度)来评估的。通过统计分析比较不同类型视频的影响。我们选择了7个最具影响力的视频进行进一步分析，这些视频最初是由youtube用户制作的。他们将这些视频与同一youtube用户在学生自杀视频发布前和发布后上传的7个视频进行了比较。 The comparison focused on their impacts and the network structure of the comments to those videos. Results: A total of 162 relevant YouTube videos were identified. They were uploaded by 7 types of stakeholders, and the most common format was one person talking to the camera. A total of 87.0% (141/162) of the videos were originally created by the uploaders and only 8.0% (13/162) of the videos disclosed uploader personal experiences with suicide. The uploader profiles being popular or top YouTubers and the video containing disclosure of the uploader’s personal experiences were found to be significantly correlated with greater impacts (P<.001). Focusing on the 7 most impactful original videos, it is found that those videos generated more engagement, especially more interactions between the viewers, and more insights than regular videos uploaded by the same YouTubers. Conclusions: When responding to a youth suicide crisis, videos made by key opinion leaders on YouTube sharing their own experiences of overcoming suicide risks could generate significant positive impacts. These types of videos offer a precious opportunity to craft online campaigns and activities to raise suicide prevention awareness and engage vulnerable youth. %R 10.2196/15551 %U https://mental.www.mybigtv.com/2021/6/e15551/ %U https://doi.org/10.2196/15551