| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 903 | 
                                    
                                    75.3%
                                 | 
| 2 | Once or twice | 94 | 
                                    
                                    7.8%
                                 | 
| 3 | A few times | 117 | 
                                    
                                    9.8%
                                 | 
| 4 | Often | 71 | 
                                    
                                    5.9%
                                 | 
| 5 | Don't know | 5 | 
                                    
                                    0.4%
                                 | 
| 99 | Missing data | 10 | 
                                    
                                    0.8%
                                 |