| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 66 |
12.7%
|
| -7 | Does not apply (spontaneous) | 240 |
46.1%
|
| 0 | 138 |
26.5%
|
|
| 1 | 3 |
0.6%
|
|
| 3 | 1 |
0.2%
|
|
| 5 | 3 |
0.6%
|
|
| 7 | 1 |
0.2%
|
|
| 10 | 1 |
0.2%
|
|
| 20 | 1 |
0.2%
|
|
| 27 | 1 |
0.2%
|
|
| 30 | 6 |
1.2%
|
|
| 35 | 1 |
0.2%
|
|
| 50 | 3 |
0.6%
|
|
| 60 | 1 |
0.2%
|
|
| 61 | 1 |
0.2%
|
|
| 66 | 1 |
0.2%
|
|
| 70 | 3 |
0.6%
|
|
| 80 | 1 |
0.2%
|
|
| 97 | 1 |
0.2%
|
|
| 100 | 48 |
9.2%
|
|
| Sysmiss | 718 |