| Value | Category | Cases | |
|---|---|---|---|
| -7 | Refusal (spontaneous) | 625 |
21.2%
|
| 0 | 562 |
19%
|
|
| 1 | 912 |
30.9%
|
|
| 2 | 535 |
18.1%
|
|
| 3 | 233 |
7.9%
|
|
| 4 | 88 |
3%
|