Data
273,455 items of data are available, covering 220,514 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 | 39 |
| 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 = 32.0025
- Std.dev = 7.67518
- 733 items above graph maximum of 55
- 5165 items have value -11 (Still taking the pill)
- 507 items have value -3 (Prefer not to answer)
- 28636 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
219,912 participants, 219,912 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 = 31.8239
- Std.dev = 7.51674
- 407 items above graph maximum of 55
- 4913 items have value -11 (Still taking the pill)
- 449 items have value -3 (Prefer not to answer)
- 22011 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+)
39,490 participants, 39,490 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 | 13 |
|
|
- There are 43 distinct values.
- Mean = 32.8472
- Std.dev = 8.33816
- 259 items above graph maximum of 55
- 135 items have value -11 (Still taking the pill)
- 43 items have value -3 (Prefer not to answer)
- 5013 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
5,613 participants, 5,613 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 | 14 |
|
|
- There are 42 distinct values.
- Mean = 32.8329
- Std.dev = 8.40685
- 40 items above graph maximum of 55
- 6 items have value -11 (Still taking the pill)
- 7 items have value -3 (Prefer not to answer)
- 718 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 |
