期刊
出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.2111454118
关键词
COVID-19; SARS-CoV2; survey
资金
- Google.org
- Centers for Disease Control and Prevention
The US COVID-19 Trends and Impact Survey (CTIS) is a large, internet-based survey collecting information about COVID-19 symptoms, risks, behaviors, and more. The survey's scale allows for real-time tracking of trends and provision of essential data supplementing official reporting for high-priority policy questions.
The US COVID-19 Trends and Impact Survey (CTIS) is a large, cross-sectional, internet-based survey that has operated continuously since April 6, 2020. By inviting a random sample of Facebook active users each day, CTIS collects information about COVID-19 symptoms, risks, mitigating behaviors, mental health, testing, vaccination, and other key priorities. The large scale of the survey-over 20 million responses in its first year of operation-allows tracking of trends over short timescales and allows comparisons at fine demographic and geographic detail. The survey has been repeatedly revised to respond to emerging public health priorities. In this paper, we describe the survey methods and content and give examples of CTIS results that illuminate key patterns and trends and help answer high-priority policy questions relevant to the COVID-19 epidemic and response. These results demonstrate how large online surveys can provide continuous, real-time indicators of important outcomes that are not subject to public health reporting delays and backlogs. The CTIS offers high value as a supplement to official reporting data by supplying essential information about behaviors, attitudes toward policy and preventive measures, economic impacts, and other topics not reported in public health surveillance systems.
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