| Value | Category | Cases | |
|---|---|---|---|
| 0 | measured | 788 |
91.2%
|
| 3 | not present | 35 |
4.1%
|
| 4 | refused | 40 |
4.6%
|
| 6 | other | 1 |
0.1%
|
| Sysmiss | 5617 |