Description: Study year when the participant changed from Never/Current smoker to Ex-smoker (most recent quit) - up to age 53 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 | 1971 (age 25) |
| 2 | 1977 (age 29) |
| 3 | 1982 (age 36) |
| 4 | 1989 (age 43) |
| 5 | 1999 (age 53) |
| Field ID | Description | Category |
|---|---|---|
| 30534 | Study year when the participant changed from Never/Current smoker to Ex-smoker (most recent quit) - up to age 53 years | Smoking |
National Survey of Health and Development 1946 Cohort