| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 6 |
1.9%
|
| 2 | 1 | 15 |
4.7%
|
| 3 | 2 | 7 |
2.2%
|
| 4 | 3 | 1 |
0.3%
|
| 5 | 4 | 1 |
0.3%
|
| Missing value | 288 |
90.6%
|