| Value | Category | Cases | |
|---|---|---|---|
| 1 | then | 1780 | 
                                    
                                    68.8%
                                 | 
| 2 | later | 318 | 
                                    
                                    12.3%
                                 | 
| 3 | not at all | 490 | 
                                    
                                    18.9%
                                 | 
| Sysmiss | 12763 |