: Data-Field 30445

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Data

182,066 items of data are available, covering 182,066 participants.
Some values have special meanings defined by Data-Coding 100584.
Units of measurement are minutes.

Maximum	1255
Decile 9	495
Decile 8	480
Decile 7	450
Decile 6	430
Median	420
Decile 4	405
Decile 3	390
Decile 2	360
Decile 1	330
Minimum	0

There are 160 distinct values.
Mean = 415.483
Std.dev = 70.3647
245 items below graph minimum of 165
168 items above graph maximum of 660
1533 items have value -3 (Prefer not to answer)

Notes

Sleep online question: "During the past month, how many hours of actual sleep did you get each night? (This may be different to the number of hours you spent in bed.)"

The question in this field was taken from the Pittsburgh Sleep Quality Index.

Buysse D J, Reynolds CF, Monk TH, Berman SR, Kupfer DJ. The Pittsburgh Sleep Quality Index: A new instrument for psychiatric practice and research. Psychiatry Research 1989 May;28(2):193-213.

Coding 100584 defines 1 special value:

-3 represents "Prefer not to answer"

0 Related Data-Fields

There are no related data-fields

1 Resource

Preview	Name	Res ID
	Online sleep questionnaire screenshot Quality1-Quality4	2284

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