Data
77,420 items of data are available, covering 77,398 participants.
Some values have special meanings defined by Data-Coding 
1273.
Defined-instances run from 0 to 1, labelled using Instancing 
154.
| 
| Maximum | 2021-07-24 |  | Decile 9 | 2021-05-01 |  | Decile 8 | 2021-04-25 |  | Decile 7 | 2021-04-21 |  | Decile 6 | 2021-04-16 |  | Median | 2021-04-12 |  | Decile 4 | 2021-04-08 |  | Decile 3 | 2021-04-01 |  | Decile 2 | 2021-03-27 |  | Decile 1 | 2021-03-15 |  | Minimum | 2020-06-16 |  |   | 
There are 295 distinct values.Mean = 2021-04-082567 items below graph minimum of 2021-01-2711 items above graph maximum of 2021-06-1733 items have value 1900-01-01 (Date is unknown)6 items have value 1999-01-01 (Date is invalid) | 
2 Instances
Instance 0 : First COVID-19 antibody test taken, Feb 2021 to July 2021
77,380 participants, 77,380 items
| 
| Maximum | 2021-07-24 |  | Decile 9 | 2021-05-01 |  | Decile 8 | 2021-04-25 |  | Decile 7 | 2021-04-21 |  | Decile 6 | 2021-04-16 |  | Median | 2021-04-12 |  | Decile 4 | 2021-04-08 |  | Decile 3 | 2021-04-01 |  | Decile 2 | 2021-03-27 |  | Decile 1 | 2021-03-15 |  | Minimum | 2020-06-16 |  |   | 
There are 295 distinct values.Mean = 2021-04-082567 items below graph minimum of 2021-01-2711 items above graph maximum of 2021-06-1733 items have value 1900-01-01 (Date is unknown)6 items have value 1999-01-01 (Date is invalid) | 
Instance 1 : Repeat COVID-19 antibody test taken, March 2021 to July 2021
40 participants, 40 items
| 
| Maximum | 2021-05-22 |  | Decile 9 | 2021-04-30 |  | Decile 8 | 2021-04-29 |  | Decile 7 | 2021-04-22 |  | Decile 6 | 2021-04-18 |  | Median | 2021-04-12 |  | Decile 4 | 2021-04-09 |  | Decile 3 | 2021-04-01 |  | Decile 2 | 2021-03-28 |  | Decile 1 | 2021-03-24 |  | Minimum | 2021-03-18 |  |   | 
There are 24 distinct values.Mean = 2021-04-14 | 
Notes
When participants submitted their COVID-19 antibody test result, they were asked to "Please enter the date of your second vaccination" if they had responded with 'Yes' to having received their second jab.
Coding 1273 defines 2 special values:
- 1900-01-01 represents "Date is unknown"
- 1999-01-01 represents "Date is invalid"