| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
2.5%
|
| 0 | 17 |
6.2%
|
|
| 1 | 55 |
19.9%
|
|
| 2 | 74 |
26.8%
|
|
| 3 | 43 |
15.6%
|
|
| 4 | 26 |
9.4%
|
|
| 5 | 16 |
5.8%
|
|
| 6 | 7 |
2.5%
|
|
| 7 | 2 |
0.7%
|
|
| 8 | 9 |
3.3%
|
|
| 10 | 8 |
2.9%
|
|
| 12 | 1 |
0.4%
|
|
| 13 | 1 |
0.4%
|
|
| 15 | 3 |
1.1%
|
|
| 20 | 1 |
0.4%
|
|
| 25 | 1 |
0.4%
|
|
| 30 | 2 |
0.7%
|
|
| 40 | 2 |
0.7%
|
|
| 150 | 1 |
0.4%
|
|
| Sysmiss | 102 |