| Value | Category | Cases | |
|---|---|---|---|
| 0 | Measured | 6344 |
95.4%
|
| 3 | Not present | 143 |
2.2%
|
| 4 | Refused | 112 |
1.7%
|
| 6 | Other | 48 |
0.7%
|
| 9 | 21 | ||
| Sysmiss | 2389 |