| Value | Category | Cases | |
|---|---|---|---|
| 0 | 19 |
16%
|
|
| 1 | 81 |
68.1%
|
|
| 2 | 14 |
11.8%
|
|
| 3 | 4 |
3.4%
|
|
| 4 | 1 |
0.8%
|
|
| Sysmiss | 442 |