Variable breakdown

dbp_mean

---

Section and category

Physical Exam.Blood pressure

---

Description

“Mean DBP measurement (of the two taken)”

---

Additional information

	Metadata
validation	Soft max: 160 or (Sbp_mean - 20), Hard max: 250 or Sbp_mean
contents	No. of mmHg
soft_min	45
hard_min	30
is_mandatory	Yes

---

Data summary

Baseline

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
77.76	11.16	30.5	70	77	84.5	195	10.38	14.5	0.14	0.53	0	0.93	515413	100

Qc

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
76.75	10.37	40.5	69.5	76	83	141.5	9.64	13.5	0.14	0.38	0.02	0.55	15816	100

Resurvey 1

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
75.33	10.47	39	68	74.5	82	140.5	10.38	14	0.14	0.44	0.02	0.57	19803	100

Resurvey 2

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
78.28	11.15	35.5	70.5	77.5	85.5	146	10.38	15	0.14	0.38	0.02	0.53	25082	99.33

---

Between-survey agreement

[1] “Spearman’s correlation matrix:”

	Baseline	Qc	Resurvey1	Resurvey2
Baseline	1.000	0.775	0.655	0.526
Qc	0.775	1.000	0.619	0.551
Resurvey1	0.655	0.619	1.000	0.520
Resurvey2	0.526	0.551	0.520	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