Data
257,553 items of data are available, covering 220,487 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 = 31.9341
- Std.dev = 7.6158
- 607 items above graph maximum of 55
- 5155 items have value -11 (Still taking the pill)
- 488 items have value -3 (Prefer not to answer)
- 26261 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
220,040 participants, 220,040 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 = 31.8232
- Std.dev = 7.51654
- 407 items above graph maximum of 55
- 4917 items have value -11 (Still taking the pill)
- 450 items have value -3 (Prefer not to answer)
- 22028 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
8,442 participants, 8,442 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 = 32.1848
- Std.dev = 7.74161
- 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+)
26,723 participants, 26,723 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 = 32.6903
- Std.dev = 8.24512
- 156 items above graph maximum of 55
- 121 items have value -11 (Still taking the pill)
- 27 items have value -3 (Prefer not to answer)
- 3097 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
2,348 participants, 2,348 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 | 16 |
|
|
- There are 40 distinct values.
- Mean = 32.7707
- Std.dev = 8.30217
- 17 items above graph maximum of 55
- 6 items have value -11 (Still taking the pill)
- 3 items have value -3 (Prefer not to answer)
- 241 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"
