| Value | Category | Cases | |
|---|---|---|---|
| 0 | Measured | 2844 |
93.7%
|
| 3 | Not present | 68 |
2.2%
|
| 4 | Refused | 116 |
3.8%
|
| 6 | Other | 8 |
0.3%
|
| 9 | 9 | ||
| Sysmiss | 3436 |