Description: Have you been recently had difficulty staying asleep once you are off - 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 | Not at all |
| 2 | No more than usual |
| 3 | Rather more than usual |
| 4 | Much more than usual |
| Field ID | Description | Category |
|---|---|---|
| 10708 | Have you been recently had difficulty staying asleep once you are off - at age 77 years | General health questionnaire (GHQ) - screening for psychiatric disorder |
National Survey of Health and Development 1946 Cohort