Data
79,822 items of data are available, covering 79,822 participants.
Some values have special meanings defined by Data-Coding 
100291.
Units of measurement are years.
| Maximum | 88 |  
| Decile 9 | 60 |  
| Decile 8 | 51 |  
| Decile 7 | 45 |  
| Decile 6 | 40 |  
| Median | 35 |  
| Decile 4 | 30 |  
| Decile 3 | 25 |  
| Decile 2 | 20 |  
| Decile 1 | 16 |  
| Minimum | 2 |  
 
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- There are 84 distinct values.
 
- Mean = 36.5166
 
- Std.dev = 16.7237
 
- 686 items have value -3 (Prefer not to answer)
 
- 10876 items have value -1 (Do not know)
 
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Notes
Mental Well-being online question:"About how old were you the FIRST time you had a period of two weeks like this? (Whether or not you received any help for it.)"
Question was asked when Field 29011 was Yes and/or Field 29012 was Yes
Coding 100291 defines 2 special values:
- -1 represents "Do not know"
 
- -3 represents "Prefer not to answer"