Variable breakdown
had_breast_lump_removed
Section and category
Reproductive History.Surgery
Description
“Have you ever had surgery to remove a breast lump?”
Additional information
| Metadata | |
|---|---|
| contents | Categorised |
| is_mandatory | Yes |
Data summary
Baseline
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 301478 | 99.06 | 58.49 |
| Yes | 2871 | 0.94 | 0.56 |
| <NA> | 211064 | NA | 40.95 |
Resurvey 1
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 11921 | 99.14 | 60.20 |
| Yes | 103 | 0.86 | 0.52 |
| <NA> | 7779 | NA | 39.28 |
Resurvey 2
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 15110 | 97.91 | 59.84 |
| Yes | 322 | 2.09 | 1.28 |
| <NA> | 9820 | NA | 38.89 |
Between-survey agreement
Fleiss’ Kappa for m Raters:| N.participants | Surveys | Statistic | Coefficient | Z.statistic | p.value |
|---|---|---|---|---|---|
| 9216 | 3 | Kappa | 0.305 | 50.643 | 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