Data
59,890 items of data are available, covering 10,742 participants.
Some values have special meanings defined by Data-Coding 
1273.
Defined-instances run from 0 to 5, labelled using Instancing 
12.
| 
| Maximum | 2020-12-04 |  | Decile 9 | 2020-11-04 |  | Decile 8 | 2020-10-20 |  | Decile 7 | 2020-10-01 |  | Decile 6 | 2020-09-11 |  | Median | 2020-08-28 |  | Decile 4 | 2020-08-11 |  | Decile 3 | 2020-07-28 |  | Decile 2 | 2020-07-08 |  | Decile 1 | 2020-06-20 |  | Minimum | 2020-05-27 |  |   | 
There are 158 distinct values.Mean = 2020-08-271 items have value 1999-01-01 (Date is invalid) | 
6 Instances
Instance 0 : Wave 1 sample
10,742 participants, 10,742 items
| 
| Maximum | 2020-11-19 |  | Decile 9 | 2020-07-03 |  | Decile 8 | 2020-07-01 |  | Decile 7 | 2020-06-30 |  | Decile 6 | 2020-06-23 |  | Median | 2020-06-19 |  | Decile 4 | 2020-06-17 |  | Decile 3 | 2020-06-08 |  | Decile 2 | 2020-06-04 |  | Decile 1 | 2020-05-30 |  | Minimum | 2020-05-27 |  |   | 
There are 93 distinct values.Mean = 2020-06-1981 items above graph maximum of 2020-08-061 items have value 1999-01-01 (Date is invalid) | 
Instance 1 : Wave 2 sample
10,411 participants, 10,411 items
| 
| Maximum | 2020-11-19 |  | Decile 9 | 2020-07-31 |  | Decile 8 | 2020-07-29 |  | Decile 7 | 2020-07-28 |  | Decile 6 | 2020-07-22 |  | Median | 2020-07-17 |  | Decile 4 | 2020-07-15 |  | Decile 3 | 2020-07-10 |  | Decile 2 | 2020-07-09 |  | Decile 1 | 2020-07-08 |  | Minimum | 2020-06-09 |  |   | 
There are 91 distinct values.Mean = 2020-07-201 item below graph minimum of 2020-06-15300 items above graph maximum of 2020-08-23 | 
Instance 2 : Wave 3 sample
10,218 participants, 10,218 items
| 
| Maximum | 2020-12-04 |  | Decile 9 | 2020-08-28 |  | Decile 8 | 2020-08-26 |  | Decile 7 | 2020-08-25 |  | Decile 6 | 2020-08-19 |  | Median | 2020-08-14 |  | Decile 4 | 2020-08-12 |  | Decile 3 | 2020-08-07 |  | Decile 2 | 2020-08-06 |  | Decile 1 | 2020-08-05 |  | Minimum | 2020-07-07 |  |   | 
There are 95 distinct values.Mean = 2020-08-172 items below graph minimum of 2020-07-13358 items above graph maximum of 2020-09-20 | 
Instance 3 : Wave 4 sample
10,028 participants, 10,028 items
| 
| Maximum | 2020-12-04 |  | Decile 9 | 2020-09-30 |  | Decile 8 | 2020-09-23 |  | Decile 7 | 2020-09-22 |  | Decile 6 | 2020-09-16 |  | Median | 2020-09-11 |  | Decile 4 | 2020-09-09 |  | Decile 3 | 2020-09-08 |  | Decile 2 | 2020-09-04 |  | Decile 1 | 2020-09-03 |  | Minimum | 2020-08-07 |  |   | 
There are 77 distinct values.Mean = 2020-09-15181 items above graph maximum of 2020-10-27 | 
Instance 4 : Wave 5 sample
9,736 participants, 9,736 items
| 
| Maximum | 2020-12-04 |  | Decile 9 | 2020-10-27 |  | Decile 8 | 2020-10-21 |  | Decile 7 | 2020-10-20 |  | Decile 6 | 2020-10-14 |  | Median | 2020-10-09 |  | Decile 4 | 2020-10-07 |  | Decile 3 | 2020-10-06 |  | Decile 2 | 2020-10-01 |  | Decile 1 | 2020-09-30 |  | Minimum | 2020-09-22 |  |   | 
There are 56 distinct values.Mean = 2020-10-1229 items above graph maximum of 2020-11-23 | 
Instance 5 : Wave 6 sample
8,755 participants, 8,755 items
| 
| Maximum | 2020-12-04 |  | Decile 9 | 2020-11-18 |  | Decile 8 | 2020-11-18 |  | Decile 7 | 2020-11-13 |  | Decile 6 | 2020-11-10 |  | Median | 2020-11-06 |  | Decile 4 | 2020-11-04 |  | Decile 3 | 2020-10-30 |  | Decile 2 | 2020-10-29 |  | Decile 1 | 2020-10-28 |  | Minimum | 2020-10-20 |  |   | 
There are 34 distinct values.Mean = 2020-11-07 | 
Notes
The date the blood sample was received at the UK Biobank laboratory for initial processing.
Coding 1273 defines 2 special values:
- 1900-01-01 represents "Date is unknown"
- 1999-01-01 represents "Date is invalid"