Variable breakdown
work_journey_mins
Section and category
Physical Activity.Non-agricultural workers
Description
“How much time did you spend each day on journey to & from work?”
Additional information
| Metadata | |
|---|---|
| validation | Soft max: 240 (or 120 if ‘Mainly walk’) |
| notes | Non-farmers only |
| contents | No. minutes |
| soft_min | 10 |
| hard_min | 1 |
| hard_max | 360 |
| is_mandatory | No |
Data summary
Baseline
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40.06 | 31.17 | 1 | 20 | 30 | 60 | 360 | 14.83 | 40 | 0.78 | 2.18 | 0.01 | 7.98 | 121142 | 23.5 |
Resurvey 1
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 38.99 | 29.34 | 2 | 20 | 30 | 60 | 360 | 14.83 | 40 | 0.75 | 2.22 | 0.04 | 8.92 | 4026 | 20.33 |
Resurvey 2
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35.64 | 30.05 | 1 | 20 | 30 | 40 | 360 | 14.83 | 20 | 0.84 | 2.55 | 0.03 | 10.81 | 5839 | 23.12 |
Between-survey agreement
[1] “Spearman’s correlation matrix:”| Baseline | Resurvey1 | Resurvey2 | |
|---|---|---|---|
| Baseline | 1.000 | 0.588 | 0.404 |
| Resurvey1 | 0.588 | 1.000 | 0.471 |
| Resurvey2 | 0.404 | 0.471 | 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
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Copyright China Kadoorie Biobank (CKB), University of Oxford, (2024)
Page generated: 27-02-2024