Description: Whether 6ml big purple tube (blood sample) is filled - at age 77 years
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 | Yes, completely filled |
| 2 | Yes, partially filled |
| 3 | No |
| Field ID | Description | Category |
|---|---|---|
| 10652 | Whether 6ml big purple tube (blood sample) is filled - at age 77 years | Blood sample |
National Survey of Health and Development 1946 Cohort