| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 3 | 
                                    
                                    4.6%
                                 | 
| 2 | 3 | 
                                    
                                    4.6%
                                 | |
| 3 | 6 | 
                                    
                                    9.2%
                                 | |
| 4 | 4 | 
                                    
                                    6.2%
                                 | |
| 5 | 9 | 
                                    
                                    13.8%
                                 | |
| 6 | 10 | 
                                    
                                    15.4%
                                 | |
| 7 | 6 | 
                                    
                                    9.2%
                                 | |
| 8 | 16 | 
                                    
                                    24.6%
                                 | |
| 9 | 8 | 
                                    
                                    12.3%
                                 | |
| 10 | Very effective | 0 | 
                                    
                                    0%
                                 | 
| 11 | N/A | 60 | |
| Sysmiss | 18 |