Description: Period in the year when covid wave 2 questionnaire was completed - at age 74 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 | Web - Sep-Oct 2020 |
| 2 | (Yes) postal questionnaire completed |
| 3 | (No) postal questionnaire completed |
| Field ID | Description | Category |
|---|---|---|
| 33251 | Period in the year when covid wave 2 questionnaire was completed - at age 74 years | Data collection information |
National Survey of Health and Development 1946 Cohort