| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 10 |
5.8%
|
| 2 | Yes, when item is out of stock | 28 |
16.3%
|
| 3 | No | 134 |
77.9%
|
| 4 | Not applicable | 0 |
0%
|
| Sysmiss | 128 |