| Value | Category | Cases | |
|---|---|---|---|
| -99 | 1 | 
                                    
                                    0.3%
                                 | |
| 1 | Yes | 119 | 
                                    
                                    40.3%
                                 | 
| 2 | No | 175 | 
                                    
                                    59.3%
                                 | 
| Sysmiss | 31 |