| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99 | 0 | 
                                    
                                    0%
                                 | 
| 0 | 0 | 767 | 
                                    
                                    82.4%
                                 | 
| 1 | 1 | 164 | 
                                    
                                    17.6%
                                 | 
| Sysmiss | 7 |