Data
288,868 items of data are available, covering 230,278 participants.
Some values have special meanings defined by Data-Coding
100567.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Units of measurement are years.
| Maximum | 60 |
| Decile 9 | 4 |
| Decile 8 | 3 |
| Decile 7 | 2 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 2 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 0 |
|
|
- There are 43 distinct values.
- Mean = 2.41113
- Std.dev = 2.52474
- 7865 items above graph maximum of 7
- 62966 items have value -10 (Less than 1 year ago)
- 61 items have value -3 (Prefer not to answer)
- 10588 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
217,148 participants, 217,148 items
| Maximum | 40 |
| Decile 9 | 3 |
| Decile 8 | 3 |
| Decile 7 | 2 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 2 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 0 |
|
|
- There are 38 distinct values.
- Mean = 2.25152
- Std.dev = 2.34049
- 6537 items above graph maximum of 5
- 50001 items have value -10 (Less than 1 year ago)
- 51 items have value -3 (Prefer not to answer)
- 6612 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
9,568 participants, 9,568 items
| Maximum | 32 |
| Decile 9 | 3 |
| Decile 8 | 3 |
| Decile 7 | 2 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 2 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 0 |
|
|
- There are 27 distinct values.
- Mean = 2.12911
- Std.dev = 1.80399
- 179 items above graph maximum of 5
- 2108 items have value -10 (Less than 1 year ago)
- 1 items have value -3 (Prefer not to answer)
- 364 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
51,624 participants, 51,624 items
| Maximum | 60 |
| Decile 9 | 5 |
| Decile 8 | 4 |
| Decile 7 | 3 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 2 |
| Decile 3 | 2 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 0 |
|
|
- There are 39 distinct values.
- Mean = 2.9319
- Std.dev = 2.98888
- 1778 items above graph maximum of 9
- 9119 items have value -10 (Less than 1 year ago)
- 9 items have value -3 (Prefer not to answer)
- 2807 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
10,528 participants, 10,528 items
| Maximum | 50 |
| Decile 9 | 6 |
| Decile 8 | 4 |
| Decile 7 | 3 |
| Decile 6 | 3 |
| Median | 2 |
| Decile 4 | 2 |
| Decile 3 | 2 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 0 |
|
|
- There are 32 distinct values.
- Mean = 3.28115
- Std.dev = 3.4286
- 263 items above graph maximum of 11
- 1738 items have value -10 (Less than 1 year ago)
- 805 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "How many years ago was your last screen?"
The following checks were performed:
- If answer < 0 then rejected
- If answer > Participants age - 15 years then rejected
- If answer > 15 then participant asked to confirm
If the participant activated the Help button they were shown the message:
If you are unsure, please provide an estimate or select Do not know.
|
Field 2684 was collected from women who indicated that they had been for a mammogram, as defined by their answers to Field 2674
Coding 100567 defines 3 special values:
- -10 represents "Less than 1 year ago"
- -1 represents "Do not know"
- -3 represents "Prefer not to answer"
