| Value | Category | Cases | |
|---|---|---|---|
| 0 | Measured | 5227 |
97.2%
|
| 3 | Not present | 94 |
1.7%
|
| 4 | Refused | 23 |
0.4%
|
| 6 | Other | 36 |
0.7%
|
| 9 | 25 | ||
| Sysmiss | 31025 |