| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1244 | 
                                    
                                    79.1%
                                 | |
| 1 | 239 | 
                                    
                                    15.2%
                                 | |
| 2 | 68 | 
                                    
                                    4.3%
                                 | |
| 3 | 3 or more | 22 | 
                                    
                                    1.4%
                                 | 
| Sysmiss | 773 |