Variable breakdown
smoking_100_plus_cigs
Section and category
Smoking.Basic
Description
“In your life time, have you smoked a total of at least 100 cigarettes or equivalent?”
Additional information
| Metadata | |
|---|---|
| contents | Categorised |
| is_mandatory | No |
Data summary
Baseline
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 329176 | 94.39 | 63.87 |
| Yes | 19563 | 5.61 | 3.80 |
| <NA> | 166674 | NA | 32.34 |
Resurvey 1
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 13125 | 95.19 | 66.28 |
| Yes | 663 | 4.81 | 3.35 |
| <NA> | 6015 | NA | 30.37 |
Resurvey 2
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 17391 | 94.95 | 68.87 |
| Yes | 924 | 5.05 | 3.66 |
| <NA> | 6937 | NA | 27.47 |
Between-survey agreement
Fleiss’ Kappa for m Raters:| N.participants | Surveys | Statistic | Coefficient | Z.statistic | p.value |
|---|---|---|---|---|---|
| 10126 | 3 | Kappa | 0.504 | 87.834 | 0 |
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