| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 |
4.7%
|
| -7 | The establishment does not use water for production | 0 |
0%
|
| 1 | Yes | 57 |
27%
|
| 2 | No | 144 |
68.2%
|
| Sysmiss | 808 |