| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 6 |
2.2%
|
| 2 | Yes, when item is out of stock | 89 |
33%
|
| 3 | No | 157 |
58.1%
|
| 4 | Not applicable | 18 |
6.7%
|
| Sysmiss | 52 |