Description: In the last 12 months have you experienced any of the following symptoms and how much have they bothered you in everyday life? Trouble sleeping
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 | Have not had this symptom in last 12 months |
| 1 | Had symptom but it didn't bother me |
| 2 | Had symptom and it bothered me a little |
| 3 | Had symptom and it bothered me a lot |
National Survey of Health and Development 1946 Cohort