| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 15 |
6.8%
|
| 2 | Yes, when item is out of stock | 23 |
10.5%
|
| 3 | No | 179 |
81.7%
|
| 4 | Not applicable | 2 |
0.9%
|
| Sysmiss | 71 |