| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 | 
                                    
                                    0%
                                 | 
| -98 | Refuse to answer | 0 | 
                                    
                                    0%
                                 | 
| 1 | 10 | 
                                    
                                    83.3%
                                 | |
| 2 | 2 | 
                                    
                                    16.7%
                                 | |
| Sysmiss | 3311 |