%0期刊文章%@ 1438-8871 %I JMIR出版物%V 22%卡塔尔世界杯8强波胆分析 N 12% P e21418 %T社交媒体对COVID-19大流行期间美国心理健康的洞察:Twitter数据的纵向分析%A Valdez,Danny %A ten Thij,Marijn %A Bathina,Krishna %A Rutter,Lauren A %A Bollen,Johan %+印第安纳大学公共卫生学院应用健康科学系，1033 E 3街，143办公室，布卢明顿，美国，1 812 855 1561，danvald@iu.edu %K社交媒体%K分析%K信息流行病学%K信息监测%K COVID-19 %K美国%K心理健康%K信息学%K情感分析%K推特%D 2020 %7 14.12.2020 %9原创论文%J J医学互联网Res %G英语%X背景:COVID-19大流行导致了前所未有的缓解努力，打乱了数百万人的日常生活。除了大流行本身对健康的普遍影响外，这些措施还对世界精神卫生和卫生保健系统提出了挑战。考虑到传统的调查方法既耗时又昂贵，我们需要及时和积极的数据来源，以应对卫生政策对我们人口心理健康的迅速变化的影响。许多美国人现在使用推特等社交媒体平台来表达他们日常生活和社会关系的最细微的细节。在COVID-19大流行期间，这种行为预计会增加，使社交媒体数据成为了解个人福祉的丰富领域。目的:本研究旨在回答三个研究问题:(1)美国关于COVID-19的推文语料库中出现了什么主题?(2)在COVID-19大流行开始期间，社交媒体的使用增加了多少?(3)情绪会因COVID-19大流行而变化吗? Methods: We analyzed 86,581,237 public domain English language US tweets collected from an open-access public repository in three steps. First, we characterized the evolution of hashtags over time using latent Dirichlet allocation (LDA) topic modeling. Second, we increased the granularity of this analysis by downloading Twitter timelines of a large cohort of individuals (n=354,738) in 20 major US cities to assess changes in social media use. Finally, using this timeline data, we examined collective shifts in public mood in relation to evolving pandemic news cycles by analyzing the average daily sentiment of all timeline tweets with the Valence Aware Dictionary and Sentiment Reasoner (VADER) tool. Results: LDA topics generated in the early months of the data set corresponded to major COVID-19–specific events. However, as state and municipal governments began issuing stay-at-home orders, latent themes shifted toward US-related lifestyle changes rather than global pandemic-related events. Social media volume also increased significantly, peaking during stay-at-home mandates. Finally, VADER sentiment analysis scores of user timelines were initially high and stable but decreased significantly, and continuously, by late March. Conclusions: Our findings underscore the negative effects of the pandemic on overall population sentiment. Increased use rates suggest that, for some, social media may be a coping mechanism to combat feelings of isolation related to long-term social distancing. However, in light of the documented negative effect of heavy social media use on mental health, social media may further exacerbate negative feelings in the long-term for many individuals. Thus, considering the overburdened US mental health care structure, these findings have important implications for ongoing mitigation efforts. %M 33284783 %R 10.2196/21418 %U //www.mybigtv.com/2020/12/e21418/ %U https://doi.org/10.2196/21418 %U http://www.ncbi.nlm.nih.gov/pubmed/33284783