| Value | Category | Cases | |
|---|---|---|---|
| 1 | Specify | 1867 | 
                                    
                                    46.7%
                                 | 
| 3 | Same | 836 | 
                                    
                                    20.9%
                                 | 
| 8 | DK | 1296 | 
                                    
                                    32.4%
                                 | 
| Sysmiss | 20945 |