| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.8%
|
| -4 | Too many to count | 58 |
48.7%
|
| 0 | 1 |
0.8%
|
|
| 1 | 1 |
0.8%
|
|
| 2 | 7 |
5.9%
|
|
| 3 | 13 |
10.9%
|
|
| 4 | 5 |
4.2%
|
|
| 5 | 9 |
7.6%
|
|
| 6 | 4 |
3.4%
|
|
| 7 | 4 |
3.4%
|
|
| 8 | 1 |
0.8%
|
|
| 10 | 7 |
5.9%
|
|
| 15 | 4 |
3.4%
|
|
| 20 | 2 |
1.7%
|
|
| 30 | 1 |
0.8%
|
|
| 50 | 1 |
0.8%
|
|
| Sysmiss | 33 |