| Value | Category | Cases | |
|---|---|---|---|
| 1 | Often | 4 | 
                                    
                                    0.5%
                                 | 
| 2 | Sometimes | 7 | 
                                    
                                    0.8%
                                 | 
| 3 | Rarely | 7 | 
                                    
                                    0.8%
                                 | 
| 4 | Never | 806 | 
                                    
                                    97.8%
                                 | 
| 5 | Refused to answer | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 111 |