Description: Date of first angiogram or X-ray of your coronary arteries (month) - 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 |
|---|---|
| 3 | March |
| 4 | April |
| 6 | June |
| 7 | July |
| 8 | August |
| 9 | September |
| Field ID | Description | Category |
|---|---|---|
| 9465 | Date of first angiogram or X-ray of your coronary arteries (month) - at age 68 years | Chest pain or heart disease admissions |
National Survey of Health and Development 1946 Cohort