| Value | Category | Cases | |
|---|---|---|---|
| 1 | A lot worse | 0 | 
                                    
                                    0%
                                 | 
| 2 | Worse | 0 | 
                                    
                                    0%
                                 | 
| 3 | No effect | 0 | 
                                    
                                    0%
                                 | 
| 4 | Better | 0 | 
                                    
                                    0%
                                 | 
| 5 | A lot better | 0 | 
                                    
                                    0%
                                 | 
| 6 | Don't know | 0 | 
                                    
                                    0%
                                 | 
| 97 | Not applicable | 1177 | 
                                    
                                    100%
                                 | 
| 98 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 99 | Missing data | 0 | 
                                    
                                    0%
                                 |