| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | None | 52 | 
                                    
                                    4.3%
                                 | 
| 1 | Some of them | 422 | 
                                    
                                    35.2%
                                 | 
| 2 | Most of them | 347 | 
                                    
                                    28.9%
                                 | 
| 3 | All of them | 160 | 
                                    
                                    13.3%
                                 | 
| 8 | Refused | 4 | 
                                    
                                    0.3%
                                 | 
| 9 | Don't know/ Haven’t heard | 215 | 
                                    
                                    17.9%
                                 |