| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2 |
6.7%
|
|
| 4 | 1 |
3.3%
|
|
| 5 | 1 |
3.3%
|
|
| 6 | 2 |
6.7%
|
|
| 7 | 1 |
3.3%
|
|
| 12 | 5 |
16.7%
|
|
| Missing value | 18 |
60%
|