Data
269,006 items of data are available, covering 220,491 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 | 43 |
| 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 = 31.9855
- Std.dev = 7.65837
- 693 items above graph maximum of 55
- 5163 items have value -11 (Still taking the pill)
- 499 items have value -3 (Prefer not to answer)
- 27976 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
219,922 participants, 219,922 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 = 31.8238
- Std.dev = 7.51669
- 407 items above graph maximum of 55
- 4915 items have value -11 (Still taking the pill)
- 449 items have value -3 (Prefer not to answer)
- 22012 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
8,440 participants, 8,440 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 = 32.1857
- Std.dev = 7.7418
- 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)
- 894 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
36,724 participants, 36,724 items
| Maximum | 55 |
| Decile 9 | 45 |
| Decile 8 | 40 |
| Decile 7 | 36 |
| Decile 6 | 34 |
| Median | 31 |
| Decile 4 | 30 |
| Decile 3 | 28 |
| Decile 2 | 26 |
| Decile 1 | 23 |
| Minimum | 13 |
|
|
- There are 43 distinct values.
- Mean = 32.8311
- Std.dev = 8.31507
- 234 items above graph maximum of 55
- 131 items have value -11 (Still taking the pill)
- 38 items have value -3 (Prefer not to answer)
- 4610 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
3,920 participants, 3,920 items
| Maximum | 55 |
| Decile 9 | 45 |
| Decile 8 | 40 |
| Decile 7 | 36 |
| Decile 6 | 34 |
| Median | 31 |
| Decile 4 | 30 |
| Decile 3 | 28 |
| Decile 2 | 25 |
| Decile 1 | 23 |
| Minimum | 16 |
|
|
- There are 40 distinct values.
- Mean = 32.7493
- Std.dev = 8.36639
- 25 items above graph maximum of 55
- 6 items have value -11 (Still taking the pill)
- 4 items have value -3 (Prefer not to answer)
- 460 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"
1 Related Data-Field
| Field ID | Description | Relationship |
|---|
| 2784 | Ever taken oral contraceptive pill | Current Field was collected from women who indicated that they had taken the contraceptive pill, as defined by their answers to Field 2784 |
