| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 7 |
2.5%
|
| 2 | Yes, when item is out of stock | 54 |
19.3%
|
| 3 | No | 194 |
69.3%
|
| 4 | Not applicable | 25 |
8.9%
|
| Sysmiss | 10 |