| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | Never | 933 | 
                                    
                                    77.8%
                                 | 
| 1 | Less than once a year | 49 | 
                                    
                                    4.1%
                                 | 
| 2 | At least once a year | 64 | 
                                    
                                    5.3%
                                 | 
| 3 | At least every 6 months | 40 | 
                                    
                                    3.3%
                                 | 
| 4 | At least every 3 months | 54 | 
                                    
                                    4.5%
                                 | 
| 5 | At least once a month | 56 | 
                                    
                                    4.7%
                                 | 
| 9 | Don't know | 4 | 
                                    
                                    0.3%
                                 | 
| 98 | Refused | 0 | 
                                    
                                    0%
                                 |