Variable breakdown
smoking_rollup_cigs
Section and category
Smoking.Details
Description
“How many liang of tobacco do you usually smoke via hand-rolled cigarettes per month (or did you smoke before giving up)?”
Additional information
| Metadata | |
|---|---|
| validation | Soft max: Male: 20; Female: 20 |
| contents | No./day |
| hard_min | 0 |
| hard_max | 99 |
| is_mandatory | Yes |
Data summary
Baseline
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.17 | 4.19 | 0 | 0 | 0 | 0 | 99 | 0 | 0 | 3.58 | 4.98 | 0.01 | 32.74 | 166674 | 32.34 |
Resurvey 1
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.07 | 4.22 | 0 | 0 | 0 | 0 | 60 | 0 | 0 | 3.94 | 5.29 | 0.03 | 33.88 | 6015 | 30.37 |
Resurvey 2
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.09 | 4.23 | 0 | 0 | 0 | 0 | 60 | 0 | 0 | 3.89 | 5.35 | 0.03 | 35.59 | 6739 | 26.69 |
Between-survey agreement
[1] “Spearman’s correlation matrix:”| Baseline | Resurvey1 | Resurvey2 | |
|---|---|---|---|
| Baseline | 1.000 | 0.738 | 0.660 |
| Resurvey1 | 0.738 | 1.000 | 0.663 |
| Resurvey2 | 0.660 | 0.663 | 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