Variable breakdown

study_date_hour

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Section and category

Background.Basic

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Description

“Study date: Hour (Local time, i.e. GMT + 8 hours)”

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Additional information

	Metadata
contents	Two digit hour (24 hour clock)
is_mandatory	Yes

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Data summary

Baseline

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
11.88	2.57	0	10	11	14	23	2.97	4	0.22	0.49	0	-0.82	515413	100

Qc

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
11.21	2.6	1	9	10	13	23	1.48	4	0.23	0.77	0.02	0.57	15816	100

Resurvey 1

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
11.84	2.61	7	10	11	14	22	2.97	4	0.22	0.63	0.02	-0.52	19803	100

Resurvey 2

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
11.94	2.1	8	10	11	14	19	1.48	4	0.18	0.37	0.02	-0.95	25082	99.33

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Between-survey agreement

Fleiss’ Kappa for m Raters:

N.participants	Surveys	Statistic	Coefficient	Z.statistic	p.value
483	4	Kappa	0.017	2.337	0.019

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International Coordinating Centre, China Kadoorie Biobank (CKB), CTSU, Nuffield Department of Population Health, University of Oxford Old Road Campus, Headington, Oxford, OX3 7LF

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Copyright China Kadoorie Biobank (CKB), University of Oxford, (2024)

Page generated: 27-02-2024