| Value | Category | Cases | |
|---|---|---|---|
| 0 | measured | 4079 |
99.8%
|
| 3 | not present | 2 |
0%
|
| 4 | refused | 4 |
0.1%
|
| 6 | other | 2 |
0%
|
| Sysmiss | 51833 |