| Value | Category | Cases | |
|---|---|---|---|
| 0 | 7 |
2.4%
|
|
| 1 | 9 |
3.1%
|
|
| 2 | 17 |
5.9%
|
|
| 3 | 4 |
1.4%
|
|
| Missing value | 249 |
87.1%
|