| Value | Category | Cases | |
|---|---|---|---|
| 0 | Measured | 10401 |
97.1%
|
| 3 | Not present | 220 |
2.1%
|
| 4 | Refused | 25 |
0.2%
|
| 6 | Other | 66 |
0.6%
|
| 9 | 153 | ||
| Sysmiss | 34382 |