| Value | Category | Cases | |
|---|---|---|---|
| 1 | Scar present | 74 |
2.2%
|
| 2 | Scar absent | 12 |
0.4%
|
| 3 | No information | 2815 |
83.7%
|
| 5 | miss | 0 |
0%
|
| 6 | 3 |
0.1%
|
|
| 9 | na | 461 |
13.7%
|
| Sysmiss | 1271 |