| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 0 |
0%
|
| 2 | Yes, when item is out of stock | 3 |
30%
|
| 3 | No | 6 |
60%
|
| 4 | Not applicable | 1 |
10%
|
| Sysmiss | 290 |