| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.8%
|
| 0 | 16 |
12.1%
|
|
| 1 | 10 |
7.6%
|
|
| 2 | 19 |
14.4%
|
|
| 3 | 12 |
9.1%
|
|
| 5 | 18 |
13.6%
|
|
| 6 | 1 |
0.8%
|
|
| 8 | 2 |
1.5%
|
|
| 10 | 24 |
18.2%
|
|
| 12 | 2 |
1.5%
|
|
| 15 | 4 |
3%
|
|
| 17 | 1 |
0.8%
|
|
| 20 | 13 |
9.8%
|
|
| 25 | 2 |
1.5%
|
|
| 30 | 4 |
3%
|
|
| 35 | 1 |
0.8%
|
|
| 37 | 1 |
0.8%
|
|
| 38 | 1 |
0.8%
|
|
| Sysmiss | 228 |