| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 153 |
22.2%
|
| 1 | 1 | 303 |
43.9%
|
| 2 | 2 | 190 |
27.5%
|
| 3 | 3 | 44 |
6.4%
|
| Sysmiss | 2138 |