| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 652 | 
                                    
                                    51.3%
                                 | 
| 1 | Once | 426 | 
                                    
                                    33.5%
                                 | 
| 2 | Several times | 194 | 
                                    
                                    15.3%
                                 | 
| Sysmiss | Go to next question | 0 | |
| Sysmiss | 68 |