Description: During the past month, how often have you had trouble sleeping because you cannot get to sleep within 30 minutes
This is a flat (unstructured) list which uses strings (character sequences) to represent categories or special values.
| Coding can be downloaded here as a tab-separated file. |
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| Coding | Meaning |
|---|---|
| 1.0 | Not during the past month |
| 2.0 | Less than once a week |
| 3.0 | Once or twice a week |
| 4.0 | Three or more times a week |
| Field ID | Description | Category |
|---|---|---|
| 8824 | During the past month, how often have you had trouble sleeping because you cannot get to sleep within 30 minutes | Sleep |
National Survey of Health and Development 1946 Cohort