Data
251,769 items of data are available, covering 220,455 participants.
Some values have special meanings defined by Data-Coding
100595.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Units of measurement are years.
| Maximum | 55 |
| Decile 9 | 42 |
| Decile 8 | 38 |
| Decile 7 | 35 |
| Decile 6 | 33 |
| Median | 30 |
| Decile 4 | 29 |
| Decile 3 | 27 |
| Decile 2 | 25 |
| Decile 1 | 23 |
| Minimum | 5 |
|
|
- There are 48 distinct values.
- Mean = 31.904
- Std.dev = 7.59101
- 557 items above graph maximum of 55
- 5143 items have value -11 (Still taking the pill)
- 477 items have value -3 (Prefer not to answer)
- 25505 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
220,073 participants, 220,073 items
| Maximum | 55 |
| Decile 9 | 42 |
| Decile 8 | 38 |
| Decile 7 | 35 |
| Decile 6 | 33 |
| Median | 30 |
| Decile 4 | 29 |
| Decile 3 | 27 |
| Decile 2 | 25 |
| Decile 1 | 23 |
| Minimum | 5 |
|
|
- There are 48 distinct values.
- Mean = 31.8233
- Std.dev = 7.51643
- 407 items above graph maximum of 55
- 4918 items have value -11 (Still taking the pill)
- 451 items have value -3 (Prefer not to answer)
- 22028 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
8,443 participants, 8,443 items
| Maximum | 55 |
| Decile 9 | 44 |
| Decile 8 | 39 |
| Decile 7 | 35 |
| Decile 6 | 33 |
| Median | 30 |
| Decile 4 | 29 |
| Decile 3 | 27 |
| Decile 2 | 25 |
| Decile 1 | 23 |
| Minimum | 10 |
|
|
- There are 41 distinct values.
- Mean = 32.1856
- Std.dev = 7.74139
- 27 items above graph maximum of 55
- 111 items have value -11 (Still taking the pill)
- 8 items have value -3 (Prefer not to answer)
- 895 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
21,268 participants, 21,268 items
| Maximum | 55 |
| Decile 9 | 45 |
| Decile 8 | 40 |
| Decile 7 | 35 |
| Decile 6 | 33 |
| Median | 31 |
| Decile 4 | 30 |
| Decile 3 | 28 |
| Decile 2 | 25 |
| Decile 1 | 23 |
| Minimum | 13 |
|
|
- There are 43 distinct values.
- Mean = 32.5549
- Std.dev = 8.17082
- 110 items above graph maximum of 55
- 108 items have value -11 (Still taking the pill)
- 16 items have value -3 (Prefer not to answer)
- 2375 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
1,985 participants, 1,985 items
| Maximum | 55 |
| Decile 9 | 45 |
| Decile 8 | 40 |
| Decile 7 | 35 |
| Decile 6 | 34 |
| Median | 31 |
| Decile 4 | 30 |
| Decile 3 | 27 |
| Decile 2 | 25 |
| Decile 1 | 23 |
| Minimum | 16 |
|
|
- There are 40 distinct values.
- Mean = 32.6051
- Std.dev = 8.22621
- 13 items above graph maximum of 55
- 6 items have value -11 (Still taking the pill)
- 2 items have value -3 (Prefer not to answer)
- 207 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "How old were you when you last used the contraceptive pill?"
The following checks were performed:
- If answer < 5 then rejected
- If answer > Participants age then rejected
- If answer < 10 then participant asked to confirm
- If answer > 60 then participant asked to confirm
If the participant activated the Help button they were shown the message:
If you are currently taking the pill select Still taking the pill.
If you are unsure, please provide an estimate or select Do not know.
|
Field 2804 was collected from women who indicated that they had taken the contraceptive pill, as defined by their answers to Field 2784
Coding 100595 defines 3 special values:
- -1 represents "Do not know"
- -3 represents "Prefer not to answer"
- -11 represents "Still taking the pill"
