Variable breakdown
had_caffeine
Section and category
Physical Exam.Lung function
Description
“Have you had any caffeine in the last hour?”
Additional information
| Metadata | |
|---|---|
| contents | Categorised |
| is_mandatory | No |
Data summary
Resurvey 1
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 1559 | 7.93 | 7.87 |
| Yes | 18090 | 92.07 | 91.35 |
| <NA> | 154 | NA | 0.78 |
Resurvey 2
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 24257 | 96.78 | 96.06 |
| Yes | 807 | 3.22 | 3.20 |
| <NA> | 188 | NA | 0.74 |
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