| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 1 | Much worse | 40 | 
                                    
                                    3.3%
                                 | 
| 2 | Worse | 123 | 
                                    
                                    10.3%
                                 | 
| 3 | Same | 431 | 
                                    
                                    35.9%
                                 | 
| 4 | Better | 510 | 
                                    
                                    42.5%
                                 | 
| 5 | Much better | 84 | 
                                    
                                    7%
                                 | 
| 8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don’t know | 12 | 
                                    
                                    1%
                                 |