| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | None | 419 | 
                                    
                                    34.9%
                                 | 
| 1 | Some of them | 422 | 
                                    
                                    35.2%
                                 | 
| 2 | Most of them | 86 | 
                                    
                                    7.2%
                                 | 
| 3 | All of them | 17 | 
                                    
                                    1.4%
                                 | 
| 8 | Refused | 1 | 
                                    
                                    0.1%
                                 | 
| 9 | Don't know/ Haven’t heard | 255 | 
                                    
                                    21.3%
                                 |