| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 21 |
7.7%
|
| 1 | 115 |
42.1%
|
|
| 2 | 53 |
19.4%
|
|
| 3 | 23 |
8.4%
|
|
| 4 | 10 |
3.7%
|
|
| 5 | 16 |
5.9%
|
|
| 6 | 9 |
3.3%
|
|
| 7 | 5 |
1.8%
|
|
| 8 | 4 |
1.5%
|
|
| 9 | 1 |
0.4%
|
|
| 10 | 5 |
1.8%
|
|
| 11 | 1 |
0.4%
|
|
| 12 | 2 |
0.7%
|
|
| 15 | 3 |
1.1%
|
|
| 18 | 1 |
0.4%
|
|
| 20 | 2 |
0.7%
|
|
| 30 | 1 |
0.4%
|
|
| 4000 | 1 |
0.4%
|
|
| Sysmiss | 327 |