| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 4034 | 
                                    
                                    17.2%
                                 | 
| 3 | No | 19112 | 
                                    
                                    81.4%
                                 | 
| 8 | DK | 322 | 
                                    
                                    1.4%
                                 | 
| Sysmiss | 1459 |