Variable breakdown

mother_current_age

---

Section and category

Medical History.Family

---

Description

“Mother’s current age:”

---

Additional information

	Metadata
validation	Soft min: 50 or (subject’s age + 15), Soft max: 90 or (subject’s age + 50), Hard min: 40 or (subject’s age + 10), Hard max: 110 or (subject’s age + 80)
contents	Age in years
is_mandatory	No
is_dependent_on	mother_still_alive

---

Data summary

Baseline

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
72.48	8.55	43	66	72	78	110	8.9	12	0.12	0.12	0.01	-0.35	226640	43.97

Resurvey 1

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
74.29	8.28	50	68	74	80	106	8.9	12	0.11	0.1	0.03	-0.36	7688	38.82

Resurvey 2

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
78.2	7.56	53	73	78	83	110	7.41	10	0.1	0.11	0.03	-0.32	7773	30.78

---

Between-survey agreement

[1] “Spearman’s correlation matrix:”

	Baseline	Resurvey1	Resurvey2
Baseline	1.000	0.952	0.948
Resurvey1	0.952	1.000	0.955
Resurvey2	0.948	0.955	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

Tel: +44 (0)1865 743743 | Fax: +44 (0)1865 743985 | Email: ckbaccess@ndph.ox.ac.uk

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

Page generated: 27-02-2024