| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
0.3%
|
| 1 | 856 |
43.7%
|
|
| 2 | 723 |
36.9%
|
|
| 3 | 207 |
10.6%
|
|
| 4 | 64 |
3.3%
|
|
| 5 | 52 |
2.7%
|
|
| 6 | 17 |
0.9%
|
|
| 7 | 5 |
0.3%
|
|
| 8 | 6 |
0.3%
|
|
| 9 | 3 |
0.2%
|
|
| 10 | 8 |
0.4%
|
|
| 12 | 6 |
0.3%
|
|
| 13 | 1 |
0.1%
|
|
| 15 | 1 |
0.1%
|
|
| 20 | 3 |
0.2%
|
|
| 25 | 3 |
0.2%
|
|
| Sysmiss | 7415 |