| Value | Category | Cases | |
|---|---|---|---|
| 3 | Within a week | 215 | 
                                    
                                    92.3%
                                 | 
| 4 | Within 2 weeks | 8 | 
                                    
                                    3.4%
                                 | 
| 5 | After 2 weeks | 10 | 
                                    
                                    4.3%
                                 | 
| Sysmiss | 766 |