| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | The establishment does not use water for production | 10 |
5%
|
| 1 | Yes | 25 |
12.4%
|
| 2 | No | 166 |
82.6%
|
| Sysmiss | 380 |