| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not very useful | 1 | 
                                    
                                    0.8%
                                 | 
| 2 | Somewhat useful | 18 | 
                                    
                                    15%
                                 | 
| 3 | Useful | 61 | 
                                    
                                    50.8%
                                 | 
| 4 | Very useful | 40 | 
                                    
                                    33.3%
                                 | 
| Sysmiss | 471 |