| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
2.4%
|
| -7 | Does not apply | 4 |
4.7%
|
| 0 | No losses | 78 |
91.8%
|
| 1 | 1 |
1.2%
|
|
| Sysmiss | 274 |