Data
132,071 items of data are available, covering 117,150 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 200 distinct values.
- Mean = 16.0173
- Std.dev = 40.7176
- 3493 items above graph maximum of 79
- 1980 items have value -3 (Prefer not to answer)
- 23818 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
89,351 participants, 89,351 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 = 15.9333
- Std.dev = 41.6439
- 2348 items above graph maximum of 79
- 1433 items have value -3 (Prefer not to answer)
- 16166 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
10,106 participants, 10,106 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 = 15.8094
- Std.dev = 37.3408
- 280 items above graph maximum of 79
- 116 items have value -3 (Prefer not to answer)
- 1861 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
30,045 participants, 30,045 items
| Maximum | 999 |
| Decile 9 | 42 |
| 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 109 distinct values.
- Mean = 16.3604
- Std.dev = 39.4379
- 775 items above graph maximum of 82
- 403 items have value -3 (Prefer not to answer)
- 5350 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
2,569 participants, 2,569 items
| Maximum | 740 |
| Decile 9 | 36 |
| 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 55 distinct values.
- Mean = 15.7205
- Std.dev = 35.441
- 62 items above graph maximum of 70
- 28 items have value -3 (Prefer not to answer)
- 441 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"
