: Data-Field 30442

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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 mins past midnight.

Maximum	1435
Decile 9	1395
Decile 8	1380
Decile 7	1380
Decile 6	1350
Median	1350
Decile 4	1320
Decile 3	1320
Decile 2	1260
Decile 1	30
Minimum	0

There are 227 distinct values.
Mean = 1141.1
Std.dev = 469.528
850 items have value -3 (Prefer not to answer)

Notes

Sleep online question: "During the past month, what time have you usually gone to bed at night?"

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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