| Value | Category | Cases | |
|---|---|---|---|
| -8 | Refusal (spontaneous) | 3 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    
| 1 | Male | 407 | 
                                                                 
                                    
                                    70.8%
                                 
                                                             | 
                                                        
                    
| 2 | Female | 165 | 
                                                                 
                                    
                                    28.7%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 6 |