| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 2 |
0.9%
|
| 2 | Yes, when item is out of stock | 6 |
2.8%
|
| 3 | No | 138 |
63.9%
|
| 4 | Not Applicable | 70 |
32.4%
|
| Sysmiss | 89 |