| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 2 |
0.9%
|
| 2 | Yes, when item is out of stock | 26 |
11.9%
|
| 3 | No | 189 |
86.3%
|
| 4 | Not applicable | 2 |
0.9%
|
| Sysmiss | 81 |