Data
253,574 items of data are available, covering 223,253 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 | 55 |
| 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 40 distinct values.
- Mean = 2.27151
- Std.dev = 2.31596
- 5384 items above graph maximum of 7
- 57331 items have value -10 (Less than 1 year ago)
- 55 items have value -3 (Prefer not to answer)
- 8201 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
217,368 participants, 217,368 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 = 2.25207
- Std.dev = 2.34195
- 6551 items above graph maximum of 5
- 50052 items have value -10 (Less than 1 year ago)
- 51 items have value -3 (Prefer not to answer)
- 6618 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
9,574 participants, 9,574 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 = 2.12889
- Std.dev = 1.80361
- 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)
- 366 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
24,373 participants, 24,373 items
| Maximum | 55 |
| Decile 9 | 4 |
| Decile 8 | 3 |
| Decile 7 | 3 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 2 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 0 |
|
|
- There are 30 distinct values.
- Mean = 2.47572
- Std.dev = 2.27047
- 583 items above graph maximum of 7
- 4725 items have value -10 (Less than 1 year ago)
- 3 items have value -3 (Prefer not to answer)
- 1092 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
2,259 participants, 2,259 items
| Maximum | 31 |
| Decile 9 | 4 |
| Decile 8 | 3 |
| Decile 7 | 3 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 2 |
| Decile 3 | 2 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 0 |
|
|
- There are 17 distinct values.
- Mean = 2.47749
- Std.dev = 2.09422
- 40 items above graph maximum of 7
- 446 items have value -10 (Less than 1 year ago)
- 125 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"
