Value | Category |
---|---|
1 | Wave 1 (14/5/2020-8/7/2020) |
2 | Wave 2 (16/7/2020-18/9/2020) |
3 | Wave 3 (28/9/2020-30/11/2020) |
4 | Wave 4 (15/1/2021-25/3/2021) |
5 | Don't know |
6 | Refused to answer |
7 | Outlier set to missing |
8 | Inconsistency set to missing |
9 | Not applicable |