| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 164 | 
                                    
                                    75.6%
                                 | 
| 2 | One | 25 | 
                                    
                                    11.5%
                                 | 
| 3 | Two | 15 | 
                                    
                                    6.9%
                                 | 
| 4 | Three | 4 | 
                                    
                                    1.8%
                                 | 
| 5 | More than three | 9 | 
                                    
                                    4.1%
                                 | 
| Sysmiss | 34 |