| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 4 |
1.8%
|
| 2 | Yes, when item is out of stock | 35 |
16%
|
| 3 | No | 151 |
68.9%
|
| 4 | Not applicable | 29 |
13.2%
|
| Sysmiss | 81 |