| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 58 |
16.5%
|
| -8 | Refuse | 0 |
0%
|
| -5 | Not applicable | 0 |
0%
|
| -3 | Missing | 0 |
0%
|
| 1 | Dozen | 90 |
25.6%
|
| 2 | Single Unit | 203 |
57.8%
|
| Sysmiss | 9868 |