| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, always | 45 |
16.1%
|
| 2 | Yes, when item is out of stock | 18 |
6.4%
|
| 3 | No | 197 |
70.4%
|
| 4 | Not applicable | 20 |
7.1%
|
| Sysmiss | 10 |