| Value | Category | Cases | |
|---|---|---|---|
| 3 | Sí | 730 | 
                                    
                                    2.5%
                                 | 
| 4 | No | 28518 | 
                                    
                                    97.5%
                                 | 
| 9 | Ignorado | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 5848 |