| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 321 | 
                                    
                                    29.4%
                                 | 
| 1 | Yes | 737 | 
                                    
                                    67.5%
                                 | 
| 8 | Don't know | 34 | 
                                    
                                    3.1%
                                 |