| Value | Category | Cases | |
|---|---|---|---|
| 1 | YES | 3812 | 
                                    
                                    30.8%
                                 | 
| 2 | NO | 8551 | 
                                    
                                    69.1%
                                 | 
| 9 | NO RESPONSE | 19 | 
                                    
                                    0.2%
                                 | 
| Sysmiss | 3231 |