| Value | Category | Cases | |
|---|---|---|---|
| -9 | 1 | 
                                
                                0%
                             | |
| 1 | 1 | 
                                
                                0%
                             | |
| 2 | 1 | 
                                
                                0%
                             | |
| 95 | Missing | 0 | 
                                
                                0%
                             | 
| 97 | Refusal | 0 | 
                                
                                0%
                             | 
| 98 | Don't know | 0 | 
                                
                                0%
                             | 
| 99 | Not Applicable | 4337 | 
                                
                                99.9%
                             |