Variable breakdown
house_years_present
Section and category
Pollution.Indoor pollution - Current house
Description
“How long have you lived in your present house (if >=1 year)?”
Additional information
| Metadata | |
|---|---|
| validation | Hard max: Age - House_years_prev + House_years_before_prev |
| contents | No. of years |
| hard_min | 1 |
| is_mandatory | Yes |
Data summary
Baseline
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 13.03 | 9.59 | 1 | 6 | 11 | 18 | 77 | 8.9 | 12 | 0.74 | 1.7 | 0 | 4.91 | 515413 | 100 |
Resurvey 1
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14 | 9.32 | 1 | 7 | 13 | 20 | 78 | 8.9 | 13 | 0.67 | 1.42 | 0.02 | 4.13 | 19803 | 100 |
Resurvey 2
| mean | sd | min | q1 | med | q3 | max | mad | iqr | cv | skewness | se.skewness | kurtosis | n.valid | pct.valid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.02 | 13.16 | 1 | 7 | 15 | 23 | 83 | 11.86 | 16 | 0.77 | 1.43 | 0.02 | 2.91 | 25054 | 99.22 |
Between-survey agreement
[1] “Spearman’s correlation matrix:”| Baseline | Resurvey1 | Resurvey2 | |
|---|---|---|---|
| Baseline | 1.000 | 0.585 | 0.19 |
| Resurvey1 | 0.585 | 1.000 | 0.29 |
| Resurvey2 | 0.190 | 0.290 | 1.00 |
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