Data
46,516 items of data are available, covering 46,516 participants.
Some values have special meanings defined by Data-Coding
2552.
Units of measurement are mins past midnight.
| Maximum | 1435 |
| Decile 9 | 1410 |
| Decile 8 | 1380 |
| Decile 7 | 1380 |
| Decile 6 | 1365 |
| Median | 1350 |
| Decile 4 | 1320 |
| Decile 3 | 1290 |
| Decile 2 | 300 |
| Decile 1 | 10 |
| Minimum | 0 |
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- There are 219 distinct values.
- Mean = 1076.51
- Std.dev = 535.719
- 6721 items have value -4 (Varies significantly)
- 522 items have value -3 (Prefer not to answer)
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Notes
Sleep online question: "On workdays in the past month, what time did you typically fall asleep? (This may be different to the time you went to bed)"
Question was asked when Field 30430 or Field 30431 was No - I worked standard hours or Yes - I worked evening shifts or Yes - I worked morning shifts or Yes - I worked night shifts or Yes - I worked rotating shifts or had irregular hours
Coding 2552 defines 2 special values:
- -4 represents "Varies significantly"
- -3 represents "Prefer not to answer"
