Variable breakdown
tea_years_ago
Section and category
Tea Consumption.Basic
Description
“How long ago did you stop drinking tea at least once per week?”
Additional information
| Metadata | |
|---|---|
| contents | No. of years |
| soft_max | Age 15 |
| hard_min | 1 |
| hard_max | Age 5 |
| is_mandatory | No |
| is_dependent_on | tea_drank_in_past |
Data summary
Baseline
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4.93 | 5.71 | 1 | 1 | 3 | 6 | 54 | 2.97 | 5 | 1.16 | 2.95 | 0.02 | 12.54 | 11623 | 2.26 |
Resurvey 1
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5.19 | 5.75 | 1 | 1 | 3 | 6 | 40 | 2.97 | 5 | 1.11 | 2.37 | 0.13 | 7.19 | 367 | 1.85 |
Resurvey 2
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7.23 | 8.26 | 1 | 2 | 5 | 10 | 57 | 4.45 | 8 | 1.14 | 2.61 | 0.1 | 8.82 | 625 | 2.48 |
Between-survey agreement
[1] “Spearman’s correlation matrix:”| Baseline | Resurvey1 | Resurvey2 | |
|---|---|---|---|
| Baseline | 1.000 | 0.067 | 0.580 |
| Resurvey1 | 0.067 | 1.000 | 0.523 |
| Resurvey2 | 0.580 | 0.523 | 1.000 |
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