| Value | Category | Cases | |
|---|---|---|---|
| 0 | 157 |
71%
|
|
| 1 | 44 |
19.9%
|
|
| 2 | 13 |
5.9%
|
|
| 3 | 6 |
2.7%
|
|
| 4 | 1 |
0.5%
|
|
| Missing value | 45 |