Variable breakdown
diet_calcium_iron_zinc
Section and category
Diet.Supplements
Description
“During the past 12 months, have you regularly taken calcium/iron/zinc supplements?”
Additional information
| Metadata | |
|---|---|
| contents | Categorised |
| is_mandatory | Yes |
Data summary
Baseline
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 478822 | 92.9 | 92.9 |
| Yes | 36591 | 7.1 | 7.1 |
| <NA> | 0 | NA | 0.0 |
Resurvey 1
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 18207 | 91.94 | 91.94 |
| Yes | 1596 | 8.06 | 8.06 |
| <NA> | 0 | NA | 0.00 |
Resurvey 2
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 20308 | 81.06 | 80.42 |
| Yes | 4746 | 18.94 | 18.79 |
| <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 | 0.112 | 23.699 | 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