| Value | Category | Cases | |
|---|---|---|---|
| 0 | 171 |
24%
|
|
| 1 | 441 |
61.9%
|
|
| 2 | 83 |
11.7%
|
|
| 3 | 15 |
2.1%
|
|
| 4 | 2 |
0.3%
|
|
| Missing value | 7 |