Description: Identifies whether a participant is wearing contact lenses.
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. |
WARNING: the interactive features of this website use CSS3, which your browser does not support. To use the full features of this website, please update your browser.
| Coding | Meaning |
|---|---|
| 0 | Not wearing contact lenses |
| 2 | Contacts lenses in Right eye only |
| 3 | Contacts lenses in Left eye only |
| 4 | Both eyes have contact lenses |
Enabling scientific discoveries that improve human health