| Value | Category | Cases | |
|---|---|---|---|
| 1 | Scar present | 27 |
1.6%
|
| 2 | Scar absent | 2 |
0.1%
|
| 3 | No information | 1024 |
61.2%
|
| 5 | miss | 0 |
0%
|
| 6 | 1 |
0.1%
|
|
| 9 | na | 618 |
37%
|
| Sysmiss | 733 |