Variable breakdown
lived_with_smoker_years
Section and category
Pollution.Passive smoking
Description
“How long have you lived in the same house as a smoker?”
Additional information
| Metadata | |
|---|---|
| validation | Hard max: Current age |
| contents | No. of years |
| hard_min | 1 |
| is_mandatory | No |
| is_dependent_on | ever_lived_with_smoker |
Data summary
Baseline
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 30.23 | 15.3 | 0 | 20 | 28 | 40 | 80 | 14.83 | 20 | 0.51 | 0.39 | 0 | -0.44 | 388889 | 75.45 |
Resurvey 1
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 33.16 | 15.8 | 1 | 21 | 30 | 44 | 79 | 14.83 | 23 | 0.48 | 0.33 | 0.02 | -0.54 | 15269 | 77.1 |
Resurvey 2
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 28.58 | 14.61 | 1 | 20 | 28 | 39 | 82 | 11.86 | 19 | 0.51 | 0.39 | 0.02 | -0.02 | 13521 | 53.54 |
Between-survey agreement
[1] “Spearman’s correlation matrix:”| Baseline | Resurvey1 | Resurvey2 | |
|---|---|---|---|
| Baseline | 1.000 | 0.492 | 0.382 |
| Resurvey1 | 0.492 | 1.000 | 0.372 |
| Resurvey2 | 0.382 | 0.372 | 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