| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 233 | 
                                    
                                    41.8%
                                 | 
| 1 | On duty | 169 | 
                                    
                                    30.3%
                                 | 
| 2 | On call | 155 | 
                                    
                                    27.8%
                                 | 
| Sysmiss | 711 |