: Data-Field 30439

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Data

120,625 items of data are available, covering 120,625 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	1390
Decile 7	1380
Decile 6	1380
Median	1350
Decile 4	1320
Decile 3	1260
Decile 2	60
Decile 1	0
Minimum	0

There are 252 distinct values.
Mean = 995.305
Std.dev = 592.935
22597 items have value -4 (Varies significantly)
3225 items have value -3 (Prefer not to answer)

Notes

Sleep online question: "On non-working days in the past month, what time did you typically fall asleep? (This may be different from the time you went to bed). By non-working days, we mean any days that you did not work, including if you are retired."

Question was asked when Field 30431 was No - I didn't work or 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.

This question superseded the question in Field 30438 on 10th February 2023.

Coding 2552 defines 2 special values:

-4 represents "Varies significantly"
-3 represents "Prefer not to answer"

2 Related Data-Fields

Field ID	Description	Relationship
30438	Time typically fell asleep on a non- ...	Field 30438 contains the same type of information as Current Field
30431	Worked a non-standard shift schedule ...	Field 30431 determines whether data is present for Current Field

1 Resource

Preview	Name	Res ID
	Online sleep questionnaire screenshot WAS8_ALT-WAS9_ALT	2283

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