| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES, AT LEAST ONCE | 829 | 
                                    
                                    17.4%
                                 | 
| 2 | NO, ALWAYS SUFFICIENT | 3243 | 
                                    
                                    67.9%
                                 | 
| 8 | DK | 9 | 
                                    
                                    0.2%
                                 | 
| 9 | NO RESPONSE | 1 | 
                                    
                                    0%
                                 | 
| Sysmiss | 695 | 
                                    
                                    14.5%
                                 |