| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 954 | 
                                    
                                    81.1%
                                 | 
| 2 | Once or twice | 80 | 
                                    
                                    6.8%
                                 | 
| 3 | A few times | 56 | 
                                    
                                    4.8%
                                 | 
| 4 | Often | 84 | 
                                    
                                    7.1%
                                 | 
| 5 | Don't know | 1 | 
                                    
                                    0.1%
                                 | 
| 99 | Missing data | 2 | 
                                    
                                    0.2%
                                 |