| Value | Category | Cases | |
|---|---|---|---|
| 1 | 273 | 
                                    
                                    22.9%
                                 | |
| 2 | 921 | 
                                    
                                    77.1%
                                 | |
| 99 | ND | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 306 |