Variable breakdown
old_gold
Section and category
Physical Exam.Lung function
Description
“Meets OLD (GOLD stage 1+) criterion for COPD (i.e. f_ratio < 70%)”
Additional information
| Metadata | |
|---|---|
| contents | Categorised |
| is_mandatory | No |
Data summary
Baseline
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 487440 | 94.65 | 94.57 |
| Yes | 27566 | 5.35 | 5.35 |
| <NA> | 407 | NA | 0.08 |
Qc
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 14764 | 93.55 | 93.35 |
| Yes | 1018 | 6.45 | 6.44 |
| <NA> | 34 | NA | 0.21 |
Resurvey 1
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 16053 | 82.5 | 81.06 |
| Yes | 3406 | 17.5 | 17.20 |
| <NA> | 344 | NA | 1.74 |
Resurvey 2
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 18092 | 74.59 | 71.65 |
| Yes | 6163 | 25.41 | 24.41 |
| <NA> | 997 | NA | 3.95 |
Between-survey agreement
Fleiss’ Kappa for m Raters:| N.participants | Surveys | Statistic | Coefficient | Z.statistic | p.value |
|---|---|---|---|---|---|
| 463 | 4 | Kappa | 0.272 | 14.328 | 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