Variable breakdown
alc_years_ago
Section and category
Alcohol Consumption.Basic
Description
“How long ago did you stop drinking alcohol 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 | alc_drank_in_past |
Data summary
Baseline
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6.09 | 6.53 | 1 | 2 | 4 | 8 | 55 | 4.45 | 6 | 1.07 | 2.21 | 0.02 | 6.24 | 21023 | 4.08 |
Resurvey 1
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6.3 | 6.42 | 1 | 2 | 4 | 9 | 45 | 4.45 | 7 | 1.02 | 2.16 | 0.09 | 6.15 | 735 | 3.71 |
Resurvey 2
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 9.21 | 9.8 | 1 | 2 | 6 | 12 | 61 | 5.93 | 10 | 1.06 | 2.12 | 0.07 | 5.6 | 1172 | 4.64 |
Between-survey agreement
[1] “Spearman’s correlation matrix:”| Baseline | Resurvey1 | Resurvey2 | |
|---|---|---|---|
| Baseline | 1.000 | 0.536 | 0.472 |
| Resurvey1 | 0.536 | 1.000 | 0.302 |
| Resurvey2 | 0.472 | 0.302 | 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