| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 11 |
4.3%
|
| 0 | 96 |
37.8%
|
|
| 1 | 44 |
17.3%
|
|
| 2 | 37 |
14.6%
|
|
| 3 | 14 |
5.5%
|
|
| 4 | 6 |
2.4%
|
|
| 5 | 11 |
4.3%
|
|
| 6 | 6 |
2.4%
|
|
| 7 | 1 |
0.4%
|
|
| 8 | 2 |
0.8%
|
|
| 9 | 3 |
1.2%
|
|
| 10 | 4 |
1.6%
|
|
| 12 | 3 |
1.2%
|
|
| 15 | 2 |
0.8%
|
|
| 20 | 2 |
0.8%
|
|
| 25 | 2 |
0.8%
|
|
| 28 | 1 |
0.4%
|
|
| 30 | 2 |
0.8%
|
|
| 40 | 1 |
0.4%
|
|
| 50 | 2 |
0.8%
|
|
| 60 | 1 |
0.4%
|
|
| 200 | 1 |
0.4%
|
|
| 300 | 1 |
0.4%
|
|
| 600 | 1 |
0.4%
|
|
| Sysmiss | 347 |