| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.8%
|
| 0 | 27 |
22.5%
|
|
| 1 | 11 |
9.2%
|
|
| 2 | 17 |
14.2%
|
|
| 3 | 18 |
15%
|
|
| 4 | 12 |
10%
|
|
| 5 | 11 |
9.2%
|
|
| 6 | 4 |
3.3%
|
|
| 7 | 2 |
1.7%
|
|
| 8 | 6 |
5%
|
|
| 9 | 2 |
1.7%
|
|
| 10 | 2 |
1.7%
|
|
| 12 | 1 |
0.8%
|
|
| 15 | 3 |
2.5%
|
|
| 17 | 1 |
0.8%
|
|
| 18 | 1 |
0.8%
|
|
| 75 | 1 |
0.8%
|
|
| Sysmiss | 244 |