| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 1431 | 
                                    
                                    97.5%
                                 | 
| 2 | No | 33 | 
                                    
                                    2.2%
                                 | 
| 3 | 2 | 
                                    
                                    0.1%
                                 | |
| 8 | 1 | 
                                    
                                    0.1%
                                 | |
| Sysmiss | 1767 |