NATIONAL SURVEY DATA
The first survey, referred to as Wave 1, was fielded March 10 - March 31, 2020. In contrast to the subsequent Waves 2 - 29, all respondents were invited on March 10. The distribution of responses over the survey period is therefore not random and concentrated in the first part of the survey period (see the Survey Methods tab on the Covid-19 Pulse site).
The tracking survey began with Wave 2, which fielded April 1 - April 27, 2020. From April 1, 2020 through February 16, 2021 (Waves 2 – 29) each new survey wave was fielded every two weeks. Each day 1/14th of the respondents were invited to take the survey. Since respondents had two weeks to complete the survey, the total field period for each wave was four weeks, so that responses from the participants assigned to do the survey during the last two weeks of a field period of one wave could overlap in time with responses from participants assigned to do the survey in the first two weeks of the subsequent wave.
For waves that started February 17, 2021 through July 6, 2021 (Waves 25 - 29), a new tracking survey wave was fielded every four weeks. Each day 1/28th of the respondents were invited to take the survey. Since respondents still had exactly two weeks to answer the survey, the total field period was six weeks. The tracking survey ended on July 20, 2021.
Subsequent waves of the Covid survey were fielded as stand-alone surveys, similar to Wave 1, with all invitations issued at the same time. Wave 30 was fielded from September 23 to October 31, 2021., Wave 31 was fielded from February 1 to March 30, 2021, Wave 32 from July 20 to September 9, 2022, Wave 33 from November 18, 2022 to January 15, 2023, and Wave 34 from May 12 to July 9, 2023.
Datasets, questionnaires and codebooks for each wave are listed under the Documentation tab. UAS Understanding Coronavirus in America publications in academia, blogs and the media can be found in the Publications tab. If you are interested specifically in education, visit the Understanding America Study (UAS) Education Project.
LONGITUDINAL DATA
- UAS Covid-19 Survey National Sample Longitudinal File: a cleaned and harmonized dataset containing the first 29 waves of the long-form national surveys (March 10, 2020 – July 20, 2021) and five follow-up surveys (Wave 30, fielded September 23, 2021 – October 31, 2021; Wave 31, which was fielded February 1, 2022 – March 30, 2022; Wave 32, which was fielded July 20, 2022 – September 9, 2022; Wave 33, which was fielded November 18, 2022 – January 15, 2023, and Wave 34, which was fielded May 12, 2023 – July 9, 2023). The variable names have been harmonized, allowing easy longitudinal analysis, and the file includes longitudinal sample weights. For the vast majority of analyses this longitudinal file will be the dataset of choice. For situations where you need weights for an analysis of an individual wave, we provide individual survey datasets, located in the next section of this webpage.
- Direct download: STATA | CSV | SAS
- Consult the variable crosswalk document to identify how the variable names in the longitudinal files correspond to the variable names in the raw UAS Covid files: UAS Covid-19 Survey Longitudinal Files Crosswalk
- For more information and documentation, consult the UAS COVID-19 Longitudinal Files Data Description, and visit the Data Access tab (registration and submission of a UAS Covid-19 Proposal form required)
- Previous versions of the UAS Covid-19 Survey National Sample Longitudinal Files can be found in the UAS Covid-19 Survey Longitudinal Files Archive.
INDIVIDUAL DATA:
- UAS 354: Wave 34 – UAS Covid Followup Survey Final Release (May 12, 2023 – July 9, 2023) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 353: Wave 33 – UAS Covid Followup Survey Final Release (November 18, 2022 – January 15, 2023) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 352: Wave 32 – UAS Covid Followup Survey Final Release (July 20, 2022 – September 9, 2022) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 351: Wave 31 – UAS Covid Followup Survey Final Release (February 1, 2022 – March 30, 2022) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 350: Wave 30 – UAS Covid Followup Survey Final Release (September 23, 2021 - October 31, 2021) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 348: Wave 29 – long form of the UAS Covid Survey Final Release (June 9, 2021 - July 21, 2021) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 346: Wave 28 – long form of the UAS Covid Survey Final Release (May 12, 2021 - June 22, 2021) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 344: Wave 27 – long form of the UAS Covid Survey Final Release (April 14, 2021 - May 25, 2021) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 342: Wave 26 – long form of the UAS Covid Survey Final Release (March 17, 2021 - April 27, 2021) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 340: Wave 25 – long form of the UAS Covid Survey Final Release (February 17, 2021 - March 30, 2021) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 282: Wave 24 – long form of the UAS Covid Survey Final Release (February 2, 2021 - March 3, 2021) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 280: Wave 23 – long form of the UAS Covid Survey Final Release (January 20, 2021 - February 17, 2021) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 278: Wave 22 – long form of the UAS Covid Survey Final Release (January 6, 2021 - February 3, 2021) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 276: Wave 21 – long form of the UAS Covid Survey Final Release (December 23, 2020 - January 20, 2021) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 274: Wave 20 – long form of the UAS Covid Survey Final Release (December 9, 2020 - January 6, 2021) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 272: Wave 19 – long form of the UAS Covid Survey Final Release (November 25 - December 23, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 270: Wave 18 – long form of the UAS Covid Survey Final Release (November 11 - December 9, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 268: Wave 17 – long form of the UAS Covid Survey Final Release (October 28 - November 25, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 266: Wave 16 – long form of the UAS Covid Survey Final Release (October 14 - November 11, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 264: Wave 15 – long form of the UAS Covid Survey Final Release (September 30 - October 27, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 262: Wave 14 – long form of the UAS Covid Survey Final Release (September 16 - October 14, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 260: Wave 13 – long form of the UAS Covid Survey Final Release (September 2 - September 30, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 258: Wave 12 – long form of the UAS Covid Survey Final Release (August 19 - September 16, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 256: Wave 11 – long form of the UAS Covid Survey Final Release (August 5 - September 2, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 254: Wave 10 – long form of the UAS Covid Survey Final Release (July 22 - August 19, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 252: Wave 9 – long form of the UAS Covid Survey Final Release (July 8 - August 5, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 250: Wave 8 – long form of the UAS Covid Survey Final Release (June 24 - July 22, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 248: Wave 7 – long form of the UAS Covid Survey Final Release (June 10 - July 8, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 246: Wave 6 – long form of the UAS Covid Survey Final Release (May 27 - June 23, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 244: Wave 5 – long form of the UAS Covid Survey Final Release (May 13 - June 9, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 242: Wave 4 – long form of the UAS Covid Survey Final Release (April 29, 2020 – May 26, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS 240: Wave 3 – long form of the UAS Covid Survey Final Release (April 15, 2020 – May 13, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS235: Wave 2 – long form of the UAS Covid Survey Final Release (April 1 to April 28, 2020) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)
- UAS230: Wave 1 UAS Covid Survey Final Release (March 10, 2020 - March 31, 2020). File updated May 13, 2020 to include missing base weights (final_weight unaffected) - Direct download: STATA | CSV (registration and submission of a UAS Covid-19 Proposal form required)