| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 11 |
5.1%
|
| 2 | Yes, when item is out of stock | 15 |
7%
|
| 3 | No | 144 |
67%
|
| 4 | Not Applicable | 45 |
20.9%
|
| Sysmiss | 90 |