Data
333,864 items of data are available, covering 288,973 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 hours.
| Maximum | 160 |  
| Decile 9 | 50 |  
| Decile 8 | 45 |  
| Decile 7 | 40 |  
| Decile 6 | 40 |  
| Median | 37 |  
| Decile 4 | 35 |  
| Decile 3 | 30 |  
| Decile 2 | 23 |  
| Decile 1 | 16 |  
| Minimum | 0 |  
 
 | 
 
 | 
- There are 121 distinct values.
 
- Mean = 34.8262
 
- Std.dev = 12.8961
 
- 304 items above graph maximum of 84
 
- 1604 items have value -3 (Prefer not to answer)
 
- 3447 items have value -1 (Do not know)
 
  | 
 
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
286,767 participants, 286,767 items
| Maximum | 160 |  
| Decile 9 | 50 |  
| Decile 8 | 45 |  
| Decile 7 | 40 |  
| Decile 6 | 40 |  
| Median | 37 |  
| Decile 4 | 36 |  
| Decile 3 | 30 |  
| Decile 2 | 24 |  
| Decile 1 | 16 |  
| Minimum | 0 |  
 
 | 
 
 | 
- There are 119 distinct values.
 
- Mean = 35.2833
 
- Std.dev = 12.7295
 
- 263 items above graph maximum of 84
 
- 1402 items have value -3 (Prefer not to answer)
 
- 2850 items have value -1 (Do not know)
 
  | 
Instance 1 : First repeat assessment visit (2012-13)
8,292 participants, 8,292 items
| Maximum | 156 |  
| Decile 9 | 50 |  
| Decile 8 | 44 |  
| Decile 7 | 40 |  
| Decile 6 | 39 |  
| Median | 37 |  
| Decile 4 | 35 |  
| Decile 3 | 28 |  
| Decile 2 | 20 |  
| Decile 1 | 14 |  
| Minimum | 0 |  
 
 | 
 
 | 
- There are 75 distinct values.
 
- Mean = 33.3461
 
- Std.dev = 13.5
 
- 8 items above graph maximum of 86
 
- 27 items have value -3 (Prefer not to answer)
 
- 86 items have value -1 (Do not know)
 
  | 
Instance 2 : Imaging visit (2014+)
33,398 participants, 33,398 items
| Maximum | 160 |  
| Decile 9 | 47 |  
| Decile 8 | 40 |  
| Decile 7 | 40 |  
| Decile 6 | 37 |  
| Median | 35 |  
| Decile 4 | 30 |  
| Decile 3 | 24 |  
| Decile 2 | 20 |  
| Decile 1 | 12 |  
| Minimum | 0 |  
 
 | 
 
 | 
- There are 91 distinct values.
 
- Mean = 31.8676
 
- Std.dev = 13.5442
 
- 51 items above graph maximum of 82
 
- 154 items have value -3 (Prefer not to answer)
 
- 454 items have value -1 (Do not know)
 
  | 
Instance 3 : First repeat imaging visit (2019+)
5,407 participants, 5,407 items
| Maximum | 120 |  
| Decile 9 | 45 |  
| Decile 8 | 40 |  
| Decile 7 | 40 |  
| Decile 6 | 37 |  
| Median | 35 |  
| Decile 4 | 30 |  
| Decile 3 | 23 |  
| Decile 2 | 19 |  
| Decile 1 | 12 |  
| Minimum | 0 |  
 
 | 
 
 | 
- There are 74 distinct values.
 
- Mean = 31.0711
 
- Std.dev = 13.4287
 
- 15 items above graph maximum of 78
 
- 21 items have value -3 (Prefer not to answer)
 
- 57 items have value -1 (Do not know)
 
  | 
 
Notes
ACE touchscreen question "In a typical WEEK, how many hours do you spend at work? (Do not include hours travelling to and from work)"
The following checks were performed:
- If answer > 160 then rejected
 - If answer < 1 then participant asked to confirm
 - If answer > 74 then participant asked to confirm
 
If the participant activated the Help button they were shown the message:
If you have more than one 'current job' then answer this question for your MAIN job only.
  | 
Field 767 was collected from all the participants who indicated they were in paid employment or self-employed, as defined by their answers to Field 6142
Coding 100291 defines 2 special values:
- -1 represents "Do not know"
 
- -3 represents "Prefer not to answer"
 
 
1 Related Data-Field
| Field ID | Description | Relationship | 
| 6142 | Current employment status | Current Field was collected from all the participants who indicated they were in paid employment or self-employed, as defined by their answers to Field 6142 |