| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 14 |
11.8%
|
| 0 | 19 |
16%
|
|
| 1 | 12 |
10.1%
|
|
| 2 | 19 |
16%
|
|
| 3 | 3 |
2.5%
|
|
| 4 | 1 |
0.8%
|
|
| 5 | 4 |
3.4%
|
|
| 6 | 5 |
4.2%
|
|
| 7 | 2 |
1.7%
|
|
| 8 | 4 |
3.4%
|
|
| 9 | 1 |
0.8%
|
|
| 10 | 6 |
5%
|
|
| 13 | 2 |
1.7%
|
|
| 15 | 2 |
1.7%
|
|
| 20 | 2 |
1.7%
|
|
| 23 | 1 |
0.8%
|
|
| 25 | 1 |
0.8%
|
|
| 27 | 1 |
0.8%
|
|
| 30 | 3 |
2.5%
|
|
| 33 | 1 |
0.8%
|
|
| 35 | 1 |
0.8%
|
|
| 40 | 2 |
1.7%
|
|
| 50 | 3 |
2.5%
|
|
| 51 | 1 |
0.8%
|
|
| 60 | 1 |
0.8%
|
|
| 66 | 1 |
0.8%
|
|
| 70 | 1 |
0.8%
|
|
| 80 | 1 |
0.8%
|
|
| 100 | 1 |
0.8%
|
|
| 127 | 1 |
0.8%
|
|
| 146 | 1 |
0.8%
|
|
| 309 | 1 |
0.8%
|
|
| 350 | 1 |
0.8%
|
|
| Sysmiss | 283 |