| Value | Category | Cases | |
|---|---|---|---|
| 1 | Own blade/razor | 64 |
55.7%
|
| 2 | Shared blade/razor | 22 |
19.1%
|
| 3 | Scalpel | 9 |
7.8%
|
| 4 | Knife | 11 |
9.6%
|
| 6 | Other | 2 |
1.7%
|
| 8 | Don't know | 7 |
6.1%
|