| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 3 | 
                                    
                                    1.2%
                                 | 
| 2 | Yes, when item is out of stock | 96 | 
                                    
                                    37.2%
                                 | 
| 3 | No | 158 | 
                                    
                                    61.2%
                                 | 
| 4 | Not applicable | 1 | 
                                    
                                    0.4%
                                 | 
| Sysmiss | 50 |