| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 6 |
4.8%
|
| 2 | Yes, when item is out of stock | 10 |
8.1%
|
| 3 | No | 68 |
54.8%
|
| 4 | Not applicable | 40 |
32.3%
|
| Sysmiss | 198 |