Description: During the past month, what time have you usually gone to bed at night (hour, 24 hour clock)? - at age 68 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 |
|---|---|
| 0 | Midnight |
| 1 | 1am |
| 2 | 2am |
| 20 | 8pm |
| 21 | 9pm |
| 22 | 10pm |
| 23 | 11pm |
| Field ID | Description | Category |
|---|---|---|
| 9840 | During the past month, what time have you usually gone to bed at night (hour, 24 hour clock)? - at age 68 years | Sleep |
National Survey of Health and Development 1946 Cohort