Variable breakdown
qc_dob_y
Section and category
Background.Basic
Description
“Year of birth (QC questionnaire)”
Additional information
| Metadata | |
|---|---|
| contents | Four digit year |
| soft_min | Age 33 |
| soft_max | Age 76 |
| hard_min | 1904 |
| hard_max | 1999 |
| is_mandatory | Yes |
Data summary
Qc
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1953.9 | 10.77 | 1924 | 1946 | 1954 | 1963 | 1981 | 13.34 | 17 | 0.01 | -0.22 | 0.02 | -0.9 | 15816 | 100 |
Between-survey agreement
No agreement analysis available
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