Description: First and second Controls for each epilepsy case from 1972 to 1982 - at age 36 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 | 1st control |
| 2 | 2nd control |
| 9 | Not control |
| Field ID | Description | Category |
|---|---|---|
| 8203 | First and second Controls for each epilepsy case from 1972 to 1982 - at age 36 years | Nervous system conditions |
National Survey of Health and Development 1946 Cohort