| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Metal | 492 | 2153 |
65.8%
|
| 2 | Plastic | 58 | 196 |
6%
|
| 3 | Others, specify | 4 | 4 |
0.1%
|
| Sysmiss | 181 | 918 |