| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 10 |
27.8%
|
| -8 | Refused | 0 |
0%
|
| -5 | Not applicable | 0 |
0%
|
| -3 | Missing | 0 |
0%
|
| 1 | Dozen | 13 |
36.1%
|
| 2 | Single Unit | 13 |
36.1%
|
| Sysmiss | 963 |