| Value | Category | Cases | |
|---|---|---|---|
| 0 | Measured | 8452 |
94.9%
|
| 3 | Not present | 231 |
2.6%
|
| 4 | Refused | 158 |
1.8%
|
| 6 | Other | 65 |
0.7%
|
| 9 | 34 | ||
| Sysmiss | 29575 |