Data
128,712 items of data are available, covering 114,777 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 199 distinct values.
- Mean = 16.0174
- Std.dev = 40.8428
- 3408 items above graph maximum of 79
- 1924 items have value -3 (Prefer not to answer)
- 23200 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
89,358 participants, 89,358 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 = 15.936
- Std.dev = 41.6467
- 2350 items above graph maximum of 79
- 1433 items have value -3 (Prefer not to answer)
- 16168 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+)
26,679 participants, 26,679 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 106 distinct values.
- Mean = 16.3948
- Std.dev = 39.8843
- 719 items above graph maximum of 78
- 347 items have value -3 (Prefer not to answer)
- 4730 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"
