| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 | 9 |
4.6%
|
| 1 | 2 | 1 |
0.5%
|
| 2 | 3 | 1 |
0.5%
|
| 3 | 4 | 184 |
93.9%
|
| 4 | 98 | 1 |
0.5%
|
| Sysmiss | 817 |