| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, observed | 739 | 
                                    
                                    46%
                                 | 
| 2 | Yes, not observed | 257 | 
                                    
                                    16%
                                 | 
| 3 | No | 609 | 
                                    
                                    37.9%
                                 | 
| Sysmiss | 362 |