Section and category

Physical Activity.Leisure

Description

“About how many hours per week did you do such exercise in leisure time?”

Additional information

	Metadata
validation	Soft max: 200 (or 60 if ‘1-2 times/week’)
contents	No. of hours (x10)
soft_min	5
hard_min	0
hard_max	999
is_mandatory	No

Data summary

Baseline

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
71.7	50.59	0	30	70	100	900	44.48	70	0.71	1.57	0.01	6.6	112637	21.85

Resurvey 1

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
68.59	46.64	5	35	70	80	420	44.48	45	0.68	1.57	0.04	4.21	4350	21.97

Resurvey 2

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
73.7	52.33	0	40	70	80	840	44.48	40	0.71	2.64	0.03	17.41	8966	35.51

Between-survey agreement

[1] “Spearman’s correlation matrix:”

	Baseline	Resurvey1	Resurvey2
Baseline	1.000	0.434	0.238
Resurvey1	0.434	1.000	0.234
Resurvey2	0.238	0.234	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

main_exercise_hours_x10