Variable breakdown
smoke_exposure_hours
Section and category
Pollution.Passive smoking
Description
“What is the usual duration of your exposure to other people’s tobacco smoke per week?”
Additional information
| Metadata | |
|---|---|
| validation | Soft min: 0 (or 20 if Smoke_exposure is ‘daily’), Soft max: 39 (or 20 is Smoke_exposure is ‘1-2 days/week’) |
| contents | No. of hours |
| hard_min | 1 |
| is_mandatory | No |
| is_dependent_on | smoke_exposure |
Data summary
Baseline
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10.67 | 10.35 | 0 | 2 | 7 | 18 | 99 | 8.9 | 16 | 0.97 | 1.59 | 0 | 4.1 | 322981 | 62.66 |
Resurvey 1
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 9.46 | 9.27 | 1 | 2 | 6 | 14 | 84 | 5.93 | 12 | 0.98 | 1.6 | 0.02 | 3.88 | 12076 | 60.98 |
Between-survey agreement
[1] “Spearman’s correlation matrix:”| Baseline | Resurvey1 | |
|---|---|---|
| Baseline | 1.0 | 0.2 |
| Resurvey1 | 0.2 | 1.0 |
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