| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
3.3%
|
| 0 | 5 |
5.4%
|
|
| 1 | 10 |
10.9%
|
|
| 2 | 15 |
16.3%
|
|
| 3 | 10 |
10.9%
|
|
| 4 | 7 |
7.6%
|
|
| 5 | 13 |
14.1%
|
|
| 6 | 4 |
4.3%
|
|
| 7 | 2 |
2.2%
|
|
| 8 | 4 |
4.3%
|
|
| 10 | 2 |
2.2%
|
|
| 12 | 1 |
1.1%
|
|
| 13 | 1 |
1.1%
|
|
| 14 | 1 |
1.1%
|
|
| 15 | 3 |
3.3%
|
|
| 20 | 1 |
1.1%
|
|
| 21 | 1 |
1.1%
|
|
| 25 | 1 |
1.1%
|
|
| 30 | 4 |
4.3%
|
|
| 50 | 1 |
1.1%
|
|
| 65 | 1 |
1.1%
|
|
| 70 | 1 |
1.1%
|
|
| 80 | 1 |
1.1%
|
|
| Sysmiss | 506 |