| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 191 | 
                                    
                                    88%
                                 | 
| 2 | One | 14 | 
                                    
                                    6.5%
                                 | 
| 3 | Two | 3 | 
                                    
                                    1.4%
                                 | 
| 4 | Three | 2 | 
                                    
                                    0.9%
                                 | 
| 5 | More than three | 7 | 
                                    
                                    3.2%
                                 | 
| Sysmiss | 34 |