Understanding Society User Support

Hello,

The 2019 datasets made available with the Covid survey data (SN8644), includes information collected during 2019 as part of Wave 10 and Wave 11 of the main survey annual interviews. The fieldwork period for these surveys is 24 months, so in 2019 half of the sample was being interviewed as part of Wave 10 and the other half as part of Wave 11. The Waves 1-10 dataset released (SN6614) includes data on the entire Wave 10, not just that half of the sample who were interviewed in 2019.

If you want to know the exact date of the interview then use the intervew date variables that are available in the indresp files: w_istrtdaty w_istrtdatm w_istrtdatd

For the Covid survey waves, the interviews all take place within the month named in the survey wave. So, all first wave interviews were in April 2020, the second wave interviews were in May 2020 and so on (June 2020, July 2020, Sep 2020, Nov 2020, Jan 2021).

Hope this helps,

Best wishes,
Understanding Society User Support Team