Variable breakdown
peptic_ulcer_diag
Section and category
Medical History.Personal
Description
“Has a doctor EVER told you that you had a peptic ulcer?”
Additional information
| Metadata | |
|---|---|
| contents | Categorised |
| is_mandatory | Yes |
Data summary
Baseline
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 495336 | 96.1 | 96.1 |
| Yes | 20077 | 3.9 | 3.9 |
| <NA> | 0 | NA | 0.0 |
Resurvey 1
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 19083 | 96.36 | 96.36 |
| Yes | 720 | 3.64 | 3.64 |
| <NA> | 0 | NA | 0.00 |
Resurvey 2
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 24317 | 97.06 | 96.30 |
| Yes | 737 | 2.94 | 2.92 |
| <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 | 0.277 | 58.586 | 0 |
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