Data
264,634 items of data are available, covering 220,546 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 = 31.9636
- Std.dev = 7.64142
- 656 items above graph maximum of 55
- 5161 items have value -11 (Still taking the pill)
- 494 items have value -3 (Prefer not to answer)
- 27274 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
220,026 participants, 220,026 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 = 31.8231
- Std.dev = 7.5165
- 407 items above graph maximum of 55
- 4915 items have value -11 (Still taking the pill)
- 450 items have value -3 (Prefer not to answer)
- 22027 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+)
33,075 participants, 33,075 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 = 32.7726
- Std.dev = 8.29337
- 202 items above graph maximum of 55
- 129 items have value -11 (Still taking the pill)
- 33 items have value -3 (Prefer not to answer)
- 4017 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
3,091 participants, 3,091 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 = 32.711
- Std.dev = 8.29293
- 20 items above graph maximum of 55
- 6 items have value -11 (Still taking the pill)
- 3 items have value -3 (Prefer not to answer)
- 335 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 |