Variable breakdown

f_ratio

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Section and category

Physical Exam.Lung CO

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Description

“Max FEV1 / Max FVC %”

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Additional information

	Metadata
contents	Percentage
hard_min	1.25
hard_max	7000
is_mandatory	No

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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
84.53	8.55	10.14	80.43	85.19	89.96	620	7.07	9.53	0.1	-0.34	0	41.36	515413	100

Qc

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
84.69	9.25	27.25	80.11	85.56	90.91	147.09	7.99	10.8	0.11	-1.05	0.02	2.82	15816	100

Resurvey 1

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
78.18	10.74	9.26	73.06	79.02	84.48	138.03	8.41	11.42	0.14	-0.73	0.02	1.83	19480	98.37

Resurvey 2

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
74.02	10.04	23.36	69.87	75.7	80.07	177.42	7.29	10.2	0.14	-0.79	0.02	4.04	24297	96.22

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Between-survey agreement

[1] “Spearman’s correlation matrix:”

	Baseline	Qc	Resurvey1	Resurvey2
Baseline	1.000	0.669	0.424	0.401
Qc	0.669	1.000	0.524	0.407
Resurvey1	0.424	0.524	1.000	0.493
Resurvey2	0.401	0.407	0.493	1.000

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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