| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
3.5%
|
| 0 | 48 |
24%
|
|
| 1 | 39 |
19.5%
|
|
| 2 | 25 |
12.5%
|
|
| 3 | 23 |
11.5%
|
|
| 4 | 9 |
4.5%
|
|
| 5 | 14 |
7%
|
|
| 6 | 3 |
1.5%
|
|
| 7 | 3 |
1.5%
|
|
| 8 | 2 |
1%
|
|
| 10 | 8 |
4%
|
|
| 11 | 3 |
1.5%
|
|
| 12 | 1 |
0.5%
|
|
| 14 | 1 |
0.5%
|
|
| 15 | 2 |
1%
|
|
| 20 | 2 |
1%
|
|
| 30 | 2 |
1%
|
|
| 35 | 1 |
0.5%
|
|
| 40 | 1 |
0.5%
|
|
| 50 | 3 |
1.5%
|
|
| 55 | 1 |
0.5%
|
|
| 60 | 1 |
0.5%
|
|
| 70 | 1 |
0.5%
|
|
| Sysmiss | 381 |