Section and category

Smoking.Details

Description

“How many months ago did you last stop smoking regularly? (if years < 2)”

Additional information

	Metadata
validation	Hard min: 1 if stopped 0 years ago; 12 if stopped 1 year ago, Hard max: 11 if stopped 0 years ago; 23 if stopped 1 year ago
contents	No. of months
is_mandatory	No

Data summary

Baseline

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
7.78	5.38	1	3	6	12	23	5.93	9	0.69	0.46	0.03	-0.86	7264	1.41

Resurvey 1

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
8.32	5.42	1	3	7	12	22	7.41	9	0.65	0.41	0.15	-0.78	276	1.39

Resurvey 2

mean	sd	min	q1	med	q3	max	mad	iqr	cv	skewness	se.skewness	kurtosis	n.valid	pct.valid
7.97	5.24	1	3	6	12	20	7.41	9	0.66	0.24	0.14	-1.14	322	1.28

Between-survey agreement

[1] “Spearman’s correlation matrix:”

## Error in cor(df[-1], method = "spearman", use = "complete.obs"): no complete element pairs

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

smoking_stopped_mths_ago