Variable breakdown
sleep_affects_day
Section and category
Mental Health.Sleep
Description
“During the past month, did you have difficulty staying alert while at work, eating or meeting people during daytime for 3 or more days each week?”
Additional information
| Metadata | |
|---|---|
| contents | Categorised |
| is_mandatory | Yes |
Data summary
Baseline
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 503570 | 97.7 | 97.7 |
| Yes | 11843 | 2.3 | 2.3 |
| <NA> | 0 | NA | 0.0 |
Resurvey 1
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 19593 | 98.94 | 98.94 |
| Yes | 210 | 1.06 | 1.06 |
| <NA> | 0 | NA | 0.00 |
Resurvey 2
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No | 22519 | 89.88 | 89.18 |
| Yes | 2535 | 10.12 | 10.04 |
| <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 | 0.049 | 10.253 | 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