| Value | Category | Cases | |
|---|---|---|---|
| -8 | 1 |
0.1%
|
|
| 1 | 154 |
20%
|
|
| 2 | 43 |
5.6%
|
|
| 3 | 79 |
10.3%
|
|
| 4 | 23 |
3%
|
|
| Missing value | 470 |
61%
|