| Value | Category | Cases | |
|---|---|---|---|
| 1 | SERIOUSLY EXPOSED | 611 |
2.2%
|
| 2 | MODERATELY EXPOSED | 3682 |
13.1%
|
| 3 | SLIGHTLY EXPOSED | 2293 |
8.2%
|
| 4 | NOT EXPOSED | 21419 |
76.5%
|
| Sysmiss | 17941 |