| Value | Category | Cases | |
|---|---|---|---|
| 1 | oui | 24 | 
                                    
                                    2.4%
                                 | 
| 2 | nsp | 12 | 
                                    
                                    1.2%
                                 | 
| 3 | non | 976 | 
                                    
                                    96.3%
                                 | 
| 9 | nr | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 2 | 
                                    
                                    0.2%
                                 |