| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 161 | 
                                    
                                    36.9%
                                 | 
| 1 | On duty | 184 | 
                                    
                                    42.2%
                                 | 
| 2 | On call | 91 | 
                                    
                                    20.9%
                                 | 
| Sysmiss | 832 |