| Value | Category | Cases | |
|---|---|---|---|
| -99 | DK | 0 | 
                                    
                                    0%
                                 | 
| -88 | Missing | 0 | 
                                    
                                    0%
                                 | 
| -77 | NA | 6 | 
                                    
                                    0.5%
                                 | 
| 1 | Yes | 928 | 
                                    
                                    80.6%
                                 | 
| 2 | No | 218 | 
                                    
                                    18.9%
                                 | 
| Sysmiss | 7 |