| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 10 |
4.8%
|
| 2 | Yes, when item is out of stock | 27 |
12.9%
|
| 3 | No | 172 |
81.9%
|
| 4 | Not applicable | 1 |
0.5%
|
| Sysmiss | 105 |