| Value | Category | Cases | |
|---|---|---|---|
| 0 | Measured | 21137 |
97.1%
|
| 3 | Not present | 406 |
1.9%
|
| 4 | Refused | 73 |
0.3%
|
| 6 | Other | 151 |
0.7%
|
| 9 | 129 | ||
| Sysmiss | 131944 |