Data
125,784 items of data are available, covering 113,024 participants.
Some values have special meanings defined by Data-Coding
100291.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Units of measurement are weeks.
| Maximum | 999 |
| Decile 9 | 40 |
| Decile 8 | 20 |
| Decile 7 | 12 |
| Decile 6 | 8 |
| Median | 5 |
| Decile 4 | 4 |
| Decile 3 | 3 |
| Decile 2 | 2 |
| Decile 1 | 1 |
| Minimum | 1 |
|
|
- There are 198 distinct values.
- Mean = 16.008
- Std.dev = 40.909
- 1870 items have value -3 (Prefer not to answer)
- 22671 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
89,367 participants, 89,367 items
| Maximum | 999 |
| Decile 9 | 40 |
| Decile 8 | 20 |
| Decile 7 | 12 |
| Decile 6 | 8 |
| Median | 5 |
| Decile 4 | 4 |
| Decile 3 | 3 |
| Decile 2 | 2 |
| Decile 1 | 1 |
| Minimum | 1 |
|
|
- There are 185 distinct values.
- Mean = 15.9354
- Std.dev = 41.6451
- 1433 items have value -3 (Prefer not to answer)
- 16171 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
10,107 participants, 10,107 items
| Maximum | 999 |
| Decile 9 | 40 |
| Decile 8 | 20 |
| Decile 7 | 12 |
| Decile 6 | 8 |
| Median | 6 |
| Decile 4 | 4 |
| Decile 3 | 3 |
| Decile 2 | 2 |
| Decile 1 | 1 |
| Minimum | 1 |
|
|
- There are 95 distinct values.
- Mean = 15.81
- Std.dev = 37.3385
- 116 items have value -3 (Prefer not to answer)
- 1861 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
24,297 participants, 24,297 items
| Maximum | 999 |
| Decile 9 | 40 |
| Decile 8 | 20 |
| Decile 7 | 12 |
| Decile 6 | 8 |
| Median | 6 |
| Decile 4 | 4 |
| Decile 3 | 3 |
| Decile 2 | 2 |
| Decile 1 | 2 |
| Minimum | 1 |
|
|
- There are 105 distinct values.
- Mean = 16.4425
- Std.dev = 40.31
- 299 items have value -3 (Prefer not to answer)
- 4286 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
2,013 participants, 2,013 items
| Maximum | 740 |
| Decile 9 | 32 |
| Decile 8 | 20 |
| Decile 7 | 12 |
| Decile 6 | 8 |
| Median | 6 |
| Decile 4 | 4 |
| Decile 3 | 3 |
| Decile 2 | 2 |
| Decile 1 | 2 |
| Minimum | 1 |
|
|
- There are 48 distinct values.
- Mean = 14.9438
- Std.dev = 31.2954
- 22 items have value -3 (Prefer not to answer)
- 353 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "How many weeks was the longest period when you were feeling depressed or down?"
Question was introduced part way through fieldwork in April 2009.
The following checks were performed:
- If answer < 1 then rejected
- If answer > 999 then rejected
Field 4609 was collected from participants who indicated they have felt depressed or down for at least a whole week, as defined by their answers to Field 4598
Coding 100291 defines 2 special values:
- -1 represents "Do not know"
- -3 represents "Prefer not to answer"
1 Related Data-Fields
| Field ID | Description | Relationship |
|---|
| 4598 | Ever depressed for a whole week | Current Field was collected from participants who indicated they have felt depressed or down for at least a whole week, as defined by their answers to Field 4598 |
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