| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | The establishment does not use water for production | 4 |
3%
|
| 1 | Yes | 7 |
5.2%
|
| 2 | No | 123 |
91.8%
|
| Sysmiss | 226 |