| Value | Category | Cases | |
|---|---|---|---|
| 0 | Measured | 390 |
92.9%
|
| 3 | Not present | 18 |
4.3%
|
| 4 | Refused | 9 |
2.1%
|
| 6 | Other | 3 |
0.7%
|
| Sysmiss | 8637 |