Section and category

Pollution.Details

Description

“From what year did the inside of your house tend to be coal-smoky in winter?”

Additional information

	Metadata
validation	Hard min: Year of birth, Hard max: Current year
contents	Four digit year
soft_max	1990
is_mandatory	No

Data summary

Baseline

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
1985.96	11.56	1931	1980	1986	1995	2008	10.38	15	0.01	-0.71	0.01	0.44	122089	23.69

Resurvey 1

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
1987.37	10.94	1937	1982	1988	1995	2008	10.38	13	0.01	-0.86	0.03	1.39	5489	27.72

Resurvey 2

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
1987.11	13.76	1937	1978	1986	1997	2014	13.34	19	0.01	-0.2	0.04	-0.33	3528	13.97

Between-survey agreement

[1] “Spearman’s correlation matrix:”

	Baseline	Resurvey1	Resurvey2
Baseline	1.000	0.517	0.492
Resurvey1	0.517	1.000	0.542
Resurvey2	0.492	0.542	1.000

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

Variable breakdown

winter_smoke_start_year