| Value | Category | Cases | |
|---|---|---|---|
| 0 | Measured | 1633 |
93.6%
|
| 3 | Not present | 67 |
3.8%
|
| 4 | Refused | 31 |
1.8%
|
| 6 | Other | 13 |
0.7%
|
| 9 | 13 | ||
| Sysmiss | 7300 |