| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
2.2%
|
| 0 | 24 |
25.8%
|
|
| 1 | 20 |
21.5%
|
|
| 2 | 11 |
11.8%
|
|
| 3 | 8 |
8.6%
|
|
| 4 | 3 |
3.2%
|
|
| 5 | 6 |
6.5%
|
|
| 6 | 1 |
1.1%
|
|
| 7 | 4 |
4.3%
|
|
| 8 | 2 |
2.2%
|
|
| 10 | 2 |
2.2%
|
|
| 15 | 1 |
1.1%
|
|
| 16 | 1 |
1.1%
|
|
| 18 | 1 |
1.1%
|
|
| 20 | 3 |
3.2%
|
|
| 23 | 1 |
1.1%
|
|
| 30 | 1 |
1.1%
|
|
| 50 | 1 |
1.1%
|
|
| 65 | 1 |
1.1%
|
|
| Sysmiss | 309 |