| Value | Category | Cases | |
|---|---|---|---|
| -9 | 1 |
0.1%
|
|
| 1 | Now | 16 |
1%
|
| 2 | Later | 34 |
2%
|
| 3 | Not at all | 8 |
0.5%
|
| 5 | Missing | 1 |
0.1%
|
| 7 | Refusal | 0 |
0%
|
| 9 | Not applicable | 1613 |
96.4%
|