| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 26 |
17.8%
|
| -8 | Refused | 4 |
2.7%
|
| -5 | Not applicable | 0 |
0%
|
| -3 | Missing | 4 |
2.7%
|
| -2 | Not asked in Phase 2 | 0 |
0%
|
| 1 | Dozen | 49 |
33.6%
|
| 2 | Single Unit | 63 |
43.2%
|
| Sysmiss | 8979 |