| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 6 |
2.3%
|
| 2 | Yes, when item is out of stock | 16 |
6.2%
|
| 3 | No | 206 |
79.8%
|
| 4 | Not applicable | 30 |
11.6%
|
| Sysmiss | 50 |