| Value | Category | Cases | |
|---|---|---|---|
| -998 | Dont know | 22 | 
                                    
                                    16.8%
                                 | 
| -888 | Other specify | 4 | 
                                    
                                    3.1%
                                 | 
| 1 | Blood test | 105 | 
                                    
                                    80.2%
                                 |