| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                    
                                    0%
                                 | 
| 0 | No | 1154 | 
                                    
                                    96.2%
                                 | 
| 1 | Yes, once | 22 | 
                                    
                                    1.8%
                                 | 
| 2 | Yes, twice | 13 | 
                                    
                                    1.1%
                                 | 
| 3 | Yes, three or more times | 10 | 
                                    
                                    0.8%
                                 | 
| 8 | Refused | 1 | 
                                    
                                    0.1%
                                 | 
| 9 | Don't know | 0 | 
                                    
                                    0%
                                 |