| Value | Category | Cases | |
|---|---|---|---|
| 0 | Measured | 28 |
96.6%
|
| 3 | Not present | 0 |
0%
|
| 4 | Refused | 1 |
3.4%
|
| 6 | Other | 0 |
0%
|
| 9 | 1 | ||
| Sysmiss | 6451 |