Variable breakdown

peptic_ulcer_diag_age

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Section and category

Medical History.Personal

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Description

“Age at first diagnosis of a peptic ulcer”

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Additional information

	Metadata
validation	Hard max: Current age
contents	Age in years
soft_min	15
is_mandatory	No
is_dependent_on	peptic_ulcer_diag

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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
39.6	12.55	3	30	39	49	76	13.34	19	0.32	0.25	0.02	-0.51	20076	3.9

Resurvey 1

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
42.78	13.18	14	33	42	52	78	14.83	19	0.31	0.14	0.09	-0.67	720	3.64

Resurvey 2

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
42.83	13.74	6	32	43	53	80	14.83	21	0.32	0.02	0.09	-0.59	737	2.92

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Between-survey agreement

[1] “Spearman’s correlation matrix:”

	Baseline	Resurvey1	Resurvey2
Baseline	1.000	0.733	0.616
Resurvey1	0.733	1.000	0.695
Resurvey2	0.616	0.695	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