| Value | Category | Cases | |
|---|---|---|---|
| 0 | measured | 2583 |
92.3%
|
| 3 | not present | 81 |
2.9%
|
| 4 | refused | 131 |
4.7%
|
| 6 | other | 2 |
0.1%
|
| Sysmiss | 3684 |