| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effectively at all | 5 | 
                                    
                                    2.4%
                                 | 
| 2 | 12 | 
                                    
                                    5.9%
                                 | |
| 3 | 17 | 
                                    
                                    8.3%
                                 | |
| 4 | 19 | 
                                    
                                    9.3%
                                 | |
| 5 | 41 | 
                                    
                                    20%
                                 | |
| 6 | 25 | 
                                    
                                    12.2%
                                 | |
| 7 | 23 | 
                                    
                                    11.2%
                                 | |
| 8 | 16 | 
                                    
                                    7.8%
                                 | |
| 9 | 27 | 
                                    
                                    13.2%
                                 | |
| 10 | Very effectively | 20 | 
                                    
                                    9.8%
                                 | 
| 11 | Don't know | 78 | |
| Sysmiss | 36 |