COVID-19 Trends and Impact Survey (CTIS), United States, 2020-2022

The United States COVID-19 Trends and Impact Survey (CTIS) was a voluntary survey of Facebook users in the United States conducted from April 2020 to June 2022. CTIS was intended to aid in pandemic forecasting and response at fine spatiotemporal detail. Through collaboration with Meta, it randomly sampled Facebook active users at a rate sufficient to provide roughly 35,000 responses per day, on average. Survey questions covered topics including COVID-like symptoms, behavior (such as social distancing), COVID testing, mental health, health-related beliefs, trust in officials and information sources, schooling, vaccination acceptance and hesitancy, and related subjects. Respondents provided their ZIP code. Demographic variables include age, gender, education, race/ethnicity, and occupation. Meta generated survey weights to correct for non-response and to match the US adult population age and gender distribution.
The 27 datasets make up the microdata. Users should see the Microdata User Guide for documentation on the use and interpretation of the microdata files.
Two zip files are available for public download: a monthly data zip file and a weekly data zip file. These include the aggregate data. To access these files, go to the "Download" tab and select "Other." Ensure you have enough storage space before proceeding, as the files are large.

美国新冠疫情趋势与影响调查（COVID-19 Trends and Impact Survey, CTIS）是2020年4月至2022年6月期间面向美国Facebook用户开展的自愿性调查。本项目旨在支撑精细时空尺度下的疫情预测与防控响应工作。通过与Meta合作，研究团队以满足日均获取约3.5万份有效回复的抽样比例，随机抽取活跃Facebook用户。调查内容涵盖新冠样症状、社交距离等防疫行为、新冠检测、心理健康状况、健康相关认知、对官方及信息来源的信任度、教育安排、疫苗接种意愿与犹豫态度等相关议题。受访者需提供所属邮政编码。人口统计学变量包括年龄、性别、教育程度、种族/族裔以及职业。Meta生成了调查权重，用于校正无应答偏差，并匹配美国成年人口的年龄与性别分布。
本次公开的微数据集共计27份。使用者可参阅《微数据用户指南》，以了解微数据文件的使用方法与解读规范。
可供公众下载的压缩包共两类，分别为月度数据集压缩包与周度数据集压缩包，其中包含聚合后的统计数据。如需获取此类文件，请前往“下载”标签页并选择“其他（Other）”。由于文件体积较大，下载前请确保拥有足够的存储空间。