| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.9%
|
| 0 | 6 |
5.3%
|
|
| 1 | 17 |
15%
|
|
| 2 | 13 |
11.5%
|
|
| 3 | 19 |
16.8%
|
|
| 4 | 12 |
10.6%
|
|
| 5 | 9 |
8%
|
|
| 6 | 9 |
8%
|
|
| 7 | 2 |
1.8%
|
|
| 8 | 6 |
5.3%
|
|
| 9 | 6 |
5.3%
|
|
| 10 | 4 |
3.5%
|
|
| 11 | 1 |
0.9%
|
|
| 12 | 2 |
1.8%
|
|
| 15 | 1 |
0.9%
|
|
| 16 | 1 |
0.9%
|
|
| 21 | 1 |
0.9%
|
|
| 36 | 1 |
0.9%
|
|
| 77 | 1 |
0.9%
|
|
| 140 | 1 |
0.9%
|
|
| Sysmiss | 44 |