| Value | Category | Cases | |
|---|---|---|---|
| 0 | 13 |
18.3%
|
|
| 1 | 35 |
49.3%
|
|
| 2 | 19 |
26.8%
|
|
| 3 | 3 |
4.2%
|
|
| 6 | 1 |
1.4%
|
|
| Sysmiss | 502 |