| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 167 | 
                                    
                                    44.7%
                                 | 
| 1 | On duty | 57 | 
                                    
                                    15.2%
                                 | 
| 2 | On call | 150 | 
                                    
                                    40.1%
                                 | 
| Sysmiss | 894 |