Data
1,602 items of data are available, covering 1,602 participants.
Some values have special meanings defined by Data-Coding 
100291.
Units of measurement are years.
| 
| Maximum | 73 |  | Decile 9 | 40 |  | Decile 8 | 30 |  | Decile 7 | 26 |  | Decile 6 | 23 |  | Median | 20 |  | Decile 4 | 19 |  | Decile 3 | 18 |  | Decile 2 | 16 |  | Decile 1 | 15 |  | Minimum | 7 |  |   | 
There are 60 distinct values.Mean = 23.9532Std.dev = 10.36215 items above graph maximum of 657 items have value -3 (Prefer not to answer)185 items have value -1 (Do not know) | 
Notes
Mental Well-being online question: "Roughly how old were you the FIRST time you had a period of at least three months where you were engaging in any of these behaviours?"
Question was asked when Field 29145 was At least three months
Coding 100291 defines 2 special values:
- -1 represents "Do not know"
- -3 represents "Prefer not to answer"