| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
5.7%
|
| 0 | 93 |
58.5%
|
|
| 1 | 28 |
17.6%
|
|
| 2 | 8 |
5%
|
|
| 3 | 3 |
1.9%
|
|
| 5 | 6 |
3.8%
|
|
| 6 | 3 |
1.9%
|
|
| 10 | 1 |
0.6%
|
|
| 12 | 1 |
0.6%
|
|
| 20 | 1 |
0.6%
|
|
| 24 | 1 |
0.6%
|
|
| 30 | 1 |
0.6%
|
|
| 40 | 2 |
1.3%
|
|
| 48 | 1 |
0.6%
|
|
| 96 | 1 |
0.6%
|
|
| Sysmiss | 849 |