| Value | Category | Cases | |
|---|---|---|---|
| 0 | measured | 7 |
77.8%
|
| 3 | not present | 1 |
11.1%
|
| 4 | refused | 1 |
11.1%
|
| 6 | other | 0 |
0%
|
| Sysmiss | 6472 |