| Value | Category | Cases | |
|---|---|---|---|
| 0 | measured | 669 |
90.4%
|
| 3 | not present | 51 |
6.9%
|
| 4 | refused | 11 |
1.5%
|
| 6 | other | 4 |
0.5%
|
| 9 | 5 |
0.7%
|
|
| 11 | .Z | 14927 |