| Value | Category | Cases | |
|---|---|---|---|
| 0 | received no inject. | 8 | 
                                                                 
                                    
                                    21.6%
                                 
                                                             | 
                                                        
                    
| 1 | 7 | 
                                                                 
                                    
                                    18.9%
                                 
                                                             | 
                                                        
                    |
| 2 | 3 | 
                                                                 
                                    
                                    8.1%
                                 
                                                             | 
                                                        
                    |
| 3 | 7 | 
                                                                 
                                    
                                    18.9%
                                 
                                                             | 
                                                        
                    |
| 4 | 6 | 
                                                                 
                                    
                                    16.2%
                                 
                                                             | 
                                                        
                    |
| 5 | 5 | 
                                                                 
                                    
                                    13.5%
                                 
                                                             | 
                                                        
                    |
| 6 | 1 | 
                                                                 
                                    
                                    2.7%
                                 
                                                             | 
                                                        
                    |
| 7 | 7+ | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 8 | don't know | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 367 |