Variable breakdown

fvc_second_x100

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Section and category

Physical Exam.Lung function

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Description

“Second FVC measurement”

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Additional information

	Metadata
validation	Soft min: 70 or Fev1_second_x100 or (Fvc_first_x100 - 100), Soft max: 600 or (Fvc_first_x100 + 100), Hard min: 10 or (Fvc_first_x100 - 200), Hard max: 800 or (Fvc_first_x100 + 200)
contents	No. of litres (x100)
is_mandatory	No

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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
264.43	75.81	10	211	257	311	688	72.65	100	0.29	0.42	0	0.17	515413	100

Qc

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
265.07	72.2	52	215	258	309	575	68.2	94	0.27	0.44	0.02	0.37	15816	100

Resurvey 1

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
283.72	91.34	13	222	276	339	770	85.99	117	0.32	0.44	0.02	0.44	19480	98.37

Resurvey 2

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
288.58	93.75	24	225	279	344	800	85.99	119	0.32	0.66	0.02	1.12	24298	96.22

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Between-survey agreement

[1] “Spearman’s correlation matrix:”

	Baseline	Qc	Resurvey1	Resurvey2
Baseline	1.000	0.873	0.739	0.640
Qc	0.873	1.000	0.718	0.622
Resurvey1	0.739	0.718	1.000	0.646
Resurvey2	0.640	0.622	0.646	1.000

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Page generated: 27-02-2024