| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0 | 12 | 
                                    
                                    2.3%
                                 | 
| 1 | 1 to 3 | 191 | 
                                    
                                    37.2%
                                 | 
| 2 | 4 to 6 | 224 | 
                                    
                                    43.7%
                                 | 
| 3 | 7 or more | 86 | 
                                    
                                    16.8%
                                 | 
| Sysmiss | 476 |