| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 9 |
2.3%
|
| 2 | No | 0 |
0%
|
| 5 | Missing | 2 |
0.5%
|
| 7 | Refusal | 1 |
0.3%
|
| 8 | DNK | 0 |
0%
|
| 9 | NA | 374 |
96.9%
|