| Value | Category | Cases | |
|---|---|---|---|
| -998 | Dont know | 12 | 
                                    
                                    9.2%
                                 | 
| -888 | Other specify | 1 | 
                                    
                                    0.8%
                                 | 
| 1 | Salt | 118 | 
                                    
                                    90.1%
                                 |