| Value | Category | Cases | |
|---|---|---|---|
| 1 | then | 302 | 
                                    
                                    70.1%
                                 | 
| 2 | later | 51 | 
                                    
                                    11.8%
                                 | 
| 3 | not at all | 78 | 
                                    
                                    18.1%
                                 | 
| Sysmiss | 14920 |