| Value | Category | Cases | |
|---|---|---|---|
| -9 | Break off | 4 |
0.4%
|
| -2 | Refuse to answer | 0 |
0%
|
| -1 | Don't know | 2 |
0.2%
|
| 0 | No | 1009 |
97.4%
|
| 1 | Yes | 21 |
2%
|