Variable breakdown
copd_tube_blow
Section and category
Physical Exam.COPD questionnaire
Description
“Have you ever had your lung function tested by blowing hard into a tube (excluding the present and previous CKB tests)?”
Additional information
| Metadata | |
|---|---|
| contents | Categorised |
| is_mandatory | Yes |
Data summary
Resurvey 2
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| Yes | 501 | 17.29 | 1.98 |
| No | 2345 | 80.95 | 9.29 |
| Don’t know | 51 | 1.76 | 0.20 |
| <NA> | 22355 | NA | 88.53 |
Between-survey agreement
No agreement analysis available
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