| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | Received no inject. | 475 | 
                                    
                                    41.7%
                                 | 
| 1 | 270 | 
                                    
                                    23.7%
                                 | |
| 2 | 245 | 
                                    
                                    21.5%
                                 | |
| 3 | 127 | 
                                    
                                    11.2%
                                 | |
| 4 | 12 | 
                                    
                                    1.1%
                                 | |
| 5 | 1 | 
                                    
                                    0.1%
                                 | |
| 7 | 7+ | 0 | 
                                    
                                    0%
                                 | 
| 8 | Don't know | 9 | 
                                    
                                    0.8%
                                 | 
| 9 | 6 | ||
| Sysmiss | 6768 |