| Value | Category | Cases | |
|---|---|---|---|
| 1 | Non | 990 | 
                                    
                                    94%
                                 | 
| 2 | Oui | 47 | 
                                    
                                    4.5%
                                 | 
| 3 | 2 | 12 | 
                                    
                                    1.1%
                                 | 
| 4 | 3 | 4 | 
                                    
                                    0.4%
                                 | 
| Sysmiss | 238 |