| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 93 | 
                                    
                                    7.8%
                                 | 
| 1 | Rarely | 105 | 
                                    
                                    8.8%
                                 | 
| 2 | Often | 280 | 
                                    
                                    23.3%
                                 | 
| 3 | Always | 720 | 
                                    
                                    60%
                                 | 
| 8 | Refused | 0 | 
                                    
                                    0%
                                 | 
| 9 | Don’t know | 2 | 
                                    
                                    0.2%
                                 |