| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 29 |
24%
|
| 0 | 6 |
5%
|
|
| 1 | 6 |
5%
|
|
| 2 | 14 |
11.6%
|
|
| 3 | 9 |
7.4%
|
|
| 4 | 1 |
0.8%
|
|
| 5 | 15 |
12.4%
|
|
| 6 | 1 |
0.8%
|
|
| 7 | 1 |
0.8%
|
|
| 10 | 30 |
24.8%
|
|
| 15 | 1 |
0.8%
|
|
| 20 | 3 |
2.5%
|
|
| 30 | 2 |
1.7%
|
|
| 45 | 1 |
0.8%
|
|
| 50 | 1 |
0.8%
|
|
| 80 | 1 |
0.8%
|
|
| Sysmiss | 150 |