Data
126,471 items of data are available, covering 113,194 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 periods.
| Maximum | 9999 |
| Decile 9 | 8 |
| Decile 8 | 5 |
| Decile 7 | 3 |
| Decile 6 | 3 |
| Median | 2 |
| Decile 4 | 2 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 1 |
|
|
- There are 135 distinct values.
- Mean = 6.13807
- Std.dev = 47.7848
- 4302 items above graph maximum of 15
- 2079 items have value -3 (Prefer not to answer)
- 32322 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
89,359 participants, 89,359 items
| Maximum | 3000 |
| Decile 9 | 8 |
| Decile 8 | 5 |
| Decile 7 | 3 |
| Decile 6 | 3 |
| Median | 2 |
| Decile 4 | 2 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 1 |
|
|
- There are 127 distinct values.
- Mean = 6.32218
- Std.dev = 36.1699
- 3138 items above graph maximum of 15
- 1628 items have value -3 (Prefer not to answer)
- 23465 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
10,106 participants, 10,106 items
| Maximum | 1000 |
| Decile 9 | 8 |
| Decile 8 | 4 |
| Decile 7 | 3 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 2 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 1 |
|
|
- There are 49 distinct values.
- Mean = 5.29969
- Std.dev = 28.5322
- 333 items above graph maximum of 15
- 124 items have value -3 (Prefer not to answer)
- 2511 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
24,468 participants, 24,468 items
| Maximum | 9999 |
| Decile 9 | 6 |
| Decile 8 | 4 |
| Decile 7 | 3 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 2 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 1 |
|
|
- There are 72 distinct values.
- Mean = 5.85258
- Std.dev = 79.7377
- 954 items above graph maximum of 11
- 297 items have value -3 (Prefer not to answer)
- 5802 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
2,538 participants, 2,538 items
| Maximum | 1000 |
| Decile 9 | 6 |
| Decile 8 | 4 |
| Decile 7 | 3 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 2 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 1 |
|
|
- There are 36 distinct values.
- Mean = 5.97301
- Std.dev = 40.816
- 95 items above graph maximum of 11
- 30 items have value -3 (Prefer not to answer)
- 544 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "How many periods have you had when you were feeling depressed or down for at least a whole week?"
Question was introduced part way through fieldwork in April 2009.
The following checks were performed:
- If answer < 1 then rejected
- If answer > 9999 then rejected
Field 4620 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"
