| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 57 |
6%
|
| 0 | 242 |
25.4%
|
|
| 1 | 402 |
42.2%
|
|
| 2 | 44 |
4.6%
|
|
| 3 | 33 |
3.5%
|
|
| 4 | 86 |
9%
|
|
| 5 | 59 |
6.2%
|
|
| 6 | 8 |
0.8%
|
|
| 7 | 1 |
0.1%
|
|
| 8 | 2 |
0.2%
|
|
| 10 | 10 |
1.1%
|
|
| 12 | 1 |
0.1%
|
|
| 15 | 1 |
0.1%
|
|
| 20 | 6 |
0.6%
|
|
| Sysmiss | 14 |