| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 | 
                                    
                                    4.3%
                                 | 
| -7 | Service not offered (spontaneous) | 4 | 
                                    
                                    1.7%
                                 | 
| 1 | Not at all useful | 25 | 
                                    
                                    10.6%
                                 | 
| 2 | Not very useful | 31 | 
                                    
                                    13.2%
                                 | 
| 3 | Somewhat useful | 119 | 
                                    
                                    50.6%
                                 | 
| 4 | Very useful | 46 | 
                                    
                                    19.6%
                                 | 
| Sysmiss | 720 |