| Value | Category | Cases | |
|---|---|---|---|
| 1 | Own blade/razor | 259 |
56.2%
|
| 2 | Shared blade/razor | 80 |
17.4%
|
| 3 | Scalpel | 32 |
6.9%
|
| 4 | Knife | 42 |
9.1%
|
| 6 | Other | 12 |
2.6%
|
| 8 | Don't know | 36 |
7.8%
|