| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, observed | 715 | 
                                    
                                    44.5%
                                 | 
| 2 | Yes, not observed | 279 | 
                                    
                                    17.4%
                                 | 
| 3 | No | 611 | 
                                    
                                    38.1%
                                 | 
| Sysmiss | 362 |