| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
2%
|
| 0 | 7 |
13.7%
|
|
| 1 | 9 |
17.6%
|
|
| 2 | 9 |
17.6%
|
|
| 3 | 4 |
7.8%
|
|
| 4 | 2 |
3.9%
|
|
| 5 | 2 |
3.9%
|
|
| 6 | 3 |
5.9%
|
|
| 15 | 3 |
5.9%
|
|
| 17 | 1 |
2%
|
|
| 20 | 2 |
3.9%
|
|
| 21 | 1 |
2%
|
|
| 25 | 1 |
2%
|
|
| 26 | 1 |
2%
|
|
| 30 | 1 |
2%
|
|
| 38 | 1 |
2%
|
|
| 42 | 1 |
2%
|
|
| 109 | 1 |
2%
|
|
| 644 | 1 |
2%
|
|
| Sysmiss | 105 |