| Value | Category | Cases | |
|---|---|---|---|
| 0 | Measured | 7617 |
94.5%
|
| 3 | Not present | 294 |
3.6%
|
| 4 | Refused | 102 |
1.3%
|
| 6 | Other | 50 |
0.6%
|
| 9 | Missing | 268 | |
| Sysmiss | 27489 |