Variable breakdown
nmr_xxl_vldl_l_flag
Section and category
Biochemistry Data.Blood biomarkers (NMR)
Description
“Sample quality flag for nmr_xxl_vldl_l”
Additional information
| Metadata | |
|---|---|
| contents | Categorised |
| is_mandatory | No |
Data summary
Baseline
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No issues | 7046 | 97.94 | 1.37 |
| Very low concentration | 148 | 2.06 | 0.03 |
| Value was rejected by automatic sample and measurement quality control. | 0 | 0.00 | 0.00 |
| Value cannot be quantified due to detected irregularity in sample, see tags. | 0 | 0.00 | 0.00 |
| Not defined. Derived value or ratio cannot be given due to low concentration in original measures. | 0 | 0.00 | 0.00 |
| <NA> | 508221 | NA | 98.60 |
Resurvey 1
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No issues | 43 | 100 | 0.22 |
| Very low concentration | 0 | 0 | 0.00 |
| Value was rejected by automatic sample and measurement quality control. | 0 | 0 | 0.00 |
| Value cannot be quantified due to detected irregularity in sample, see tags. | 0 | 0 | 0.00 |
| Not defined. Derived value or ratio cannot be given due to low concentration in original measures. | 0 | 0 | 0.00 |
| <NA> | 19760 | NA | 99.78 |
Resurvey 2
| value | freq | pct_valid | pct_tot |
|---|---|---|---|
| No issues | 92 | 100 | 0.36 |
| Very low concentration | 0 | 0 | 0.00 |
| Value was rejected by automatic sample and measurement quality control. | 0 | 0 | 0.00 |
| Value cannot be quantified due to detected irregularity in sample, see tags. | 0 | 0 | 0.00 |
| Not defined. Derived value or ratio cannot be given due to low concentration in original measures. | 0 | 0 | 0.00 |
| <NA> | 25160 | NA | 99.64 |
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
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