| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 72 |
20.5%
|
| -7 | Does not apply (spontaneous) | 199 |
56.5%
|
| 0 | 24 |
6.8%
|
|
| 1 | 1 |
0.3%
|
|
| 7 | 1 |
0.3%
|
|
| 15 | 1 |
0.3%
|
|
| 60 | 1 |
0.3%
|
|
| 70 | 2 |
0.6%
|
|
| 75 | 1 |
0.3%
|
|
| 100 | 50 |
14.2%
|