| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, observed | 81 | 
                                    
                                    49.7%
                                 | 
| 2 | Yes, not observed | 39 | 
                                    
                                    23.9%
                                 | 
| 3 | No | 43 | 
                                    
                                    26.4%
                                 | 
| Sysmiss | 37 |