| Value | Category | Cases | |
|---|---|---|---|
| 1 | measured | 3542 |
88%
|
| 2 | not measured | 247 |
6.1%
|
| 3 | refused | 112 |
2.8%
|
| 6 | other | 124 |
3.1%
|
| Sysmiss | 11960 |