From: Informatics assessment of COVID-19 data collection: an analysis of UK Biobank questionnaire data
Time Period | Date Range |
---|---|
T1 | mid-March through June 2020 |
T2 | July through mid-September 2020 |
T3 | mid-September through October 2020 |
T4 | November through December 2020 |
W1-6 | May through December 2020 |
W7 | November 2021 through March 2022 |