Variable breakdown
data_reliability
Section and category
Questionnaire Quality.Quality
Description
“Assessment of the reliability of the information collected?”
Additional information
| Metadata | |
|---|---|
| contents | Categorised |
| is_mandatory | Yes |
Data summary
Baseline
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| Good | 339328 | 65.84 | 65.84 |
| Fair | 163363 | 31.70 | 31.70 |
| Poor | 12722 | 2.47 | 2.47 |
| <NA> | 0 | NA | 0.00 |
Resurvey 1
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| Good | 12745 | 64.36 | 64.36 |
| Fair | 6577 | 33.21 | 33.21 |
| Poor | 481 | 2.43 | 2.43 |
| <NA> | 0 | NA | 0.00 |
Resurvey 2
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| Good | 21991 | 87.77 | 87.09 |
| Fair | 2777 | 11.08 | 11.00 |
| Poor | 286 | 1.14 | 1.13 |
| <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 | 0.115 | 25.9 | 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