| Value | Category | Cases | |
|---|---|---|---|
| -999 | Don't know | 0 | 
                                    
                                    0%
                                 | 
| -888 | No response | 0 | 
                                    
                                    0%
                                 | 
| 0 | No | 3135 | 
                                    
                                    67.4%
                                 | 
| 1 | Yes | 1513 | 
                                    
                                    32.6%
                                 | 
| Sysmiss | 37 |