| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
1.5%
|
| -4 | Too many to count | 427 |
71.8%
|
| 0 | 3 |
0.5%
|
|
| 1 | 13 |
2.2%
|
|
| 2 | 16 |
2.7%
|
|
| 3 | 22 |
3.7%
|
|
| 4 | 23 |
3.9%
|
|
| 5 | 28 |
4.7%
|
|
| 6 | 6 |
1%
|
|
| 7 | 12 |
2%
|
|
| 8 | 5 |
0.8%
|
|
| 9 | 1 |
0.2%
|
|
| 10 | 20 |
3.4%
|
|
| 12 | 1 |
0.2%
|
|
| 15 | 4 |
0.7%
|
|
| 24 | 1 |
0.2%
|
|
| 30 | 2 |
0.3%
|
|
| 31 | 1 |
0.2%
|
|
| 50 | 1 |
0.2%
|
|
| Sysmiss | 5 |