Variable breakdown
cough_sputum_morning
Section and category
Medical History.Lungs
Description
“During the past 12 months, do you usually cough up sputum after getting up in the morning?”
Additional information
| Metadata | |
|---|---|
| contents | Categorised |
| is_mandatory | Yes |
Data summary
Baseline
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 477546 | 92.65 | 92.65 |
| Yes, for <3 months | 16740 | 3.25 | 3.25 |
| Yes, for >=3 months | 21127 | 4.10 | 4.10 |
| <NA> | 0 | NA | 0.00 |
Resurvey 1
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 18939 | 95.64 | 95.64 |
| Yes, for <3 months | 422 | 2.13 | 2.13 |
| Yes, for >=3 months | 442 | 2.23 | 2.23 |
| <NA> | 0 | NA | 0.00 |
Resurvey 2
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 23374 | 93.29 | 92.56 |
| Yes, for <3 months | 950 | 3.79 | 3.76 |
| Yes, for >=3 months | 730 | 2.91 | 2.89 |
| <NA> | 198 | NA | 0.78 |
Between-survey agreement
Fleiss’ Kappa for m Raters:| N.participants | Surveys | Statistic | Coefficient | Z.statistic | p.value |
|---|---|---|---|---|---|
| 14888 | 3 | Kappa | 0.126 | 34.049 | 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