| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | 9 |
4.2%
|
|
| 1 | 13 |
6.1%
|
|
| 2 | 7 |
3.3%
|
|
| 3 | 8 |
3.7%
|
|
| 4 | 4 |
1.9%
|
|
| 5 | 3 |
1.4%
|
|
| 6 | 4 |
1.9%
|
|
| 8 | 152 |
71%
|
|
| 10 | 7 |
3.3%
|
|
| 12 | 1 |
0.5%
|
|
| 14 | 1 |
0.5%
|
|
| 15 | 1 |
0.5%
|
|
| 20 | 2 |
0.9%
|
|
| 24 | 1 |
0.5%
|
|
| 48 | 1 |
0.5%
|
|
| Sysmiss | 151 |