| Value |
Category |
| 1 |
Scar present |
| 2 |
Scar not present |
| 3 |
Unsure if scar is present |
| 7 |
Not checked |
| 9 |
Missing |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.