| Value | Category | Cases | |
|---|---|---|---|
| 1 | 25 | 341 | 
                                                                 
                                    
                                    10.2%
                                 
                                                             | 
                                                        
                    
| 2 | 45 | 508 | 
                                                                 
                                    
                                    15.2%
                                 
                                                             | 
                                                        
                    
| 3 | 65 | 644 | 
                                                                 
                                    
                                    19.2%
                                 
                                                             | 
                                                        
                    
| 4 | 85 | 835 | 
                                                                 
                                    
                                    24.9%
                                 
                                                             | 
                                                        
                    
| -6 | Follow-up refusal | 1021 | 
                                                                 
                                    
                                    30.5%
                                 
                                                             |