| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1.8%
|
| -7 | Does not apply | 2 |
3.5%
|
| 0 | No losses | 53 |
93%
|
| 1 | 1 |
1.8%
|
|
| Sysmiss | 524 |