Description: This field indicates the participants for whom it is believed to be impossible to fully complete data collection and the reason for this belief.
This is a flat (unstructured) list which uses integers to represent categories or special values.
| Coding can be downloaded here as a tab-separated file. |
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| Coding | Meaning |
|---|---|
| 1 | Death reported to UK Biobank by a relative |
| 2 | NHS records indicate they are lost to follow-up |
| 3 | NHS records indicate they have left the UK |
| 4 | UK Biobank sources report they have left the UK |
| 5 | Participant has withdrawn consent for future linkage |
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