| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 246 | 
                                    
                                    29.5%
                                 | 
| 1 | On duty | 418 | 
                                    
                                    50.1%
                                 | 
| 2 | On call | 171 | 
                                    
                                    20.5%
                                 | 
| Sysmiss | 433 |