Data
278,916 items of data are available, covering 228,499 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 41 distinct values.
- Mean = 2.37906
- Std.dev = 2.48247
- 7228 items above graph maximum of 7
- 61372 items have value -10 (Less than 1 year ago)
- 60 items have value -3 (Prefer not to answer)
- 9883 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
217,251 participants, 217,251 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 = 2.25189
- Std.dev = 2.34177
- 6545 items above graph maximum of 5
- 50026 items have value -10 (Less than 1 year ago)
- 51 items have value -3 (Prefer not to answer)
- 6615 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
9,572 participants, 9,572 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 = 2.12893
- Std.dev = 1.80378
- 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+)
45,677 participants, 45,677 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 36 distinct values.
- Mean = 2.91925
- Std.dev = 2.99051
- 1566 items above graph maximum of 9
- 8117 items have value -10 (Less than 1 year ago)
- 8 items have value -3 (Prefer not to answer)
- 2444 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
6,416 participants, 6,416 items
| Maximum | 50 |
| 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 29 distinct values.
- Mean = 3.04652
- Std.dev = 3.09656
- 252 items above graph maximum of 9
- 1121 items have value -10 (Less than 1 year ago)
- 458 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"
