| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 8 |
3.1%
|
| 2 | Yes, when item is out of stock | 22 |
8.5%
|
| 3 | No | 188 |
72.9%
|
| 4 | Not applicable | 40 |
15.5%
|
| Sysmiss | 50 |