| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not important | 3 | 
                                
                                0.7%
                             | 
| 2 | Of some importance | 15 | 
                                
                                3.4%
                             | 
| 3 | Important | 124 | 
                                
                                28%
                             | 
| 4 | Very important | 299 | 
                                
                                67.5%
                             | 
| 5 | 5.Missing | 1 | 
                                
                                0.2%
                             | 
| 9 | 9.NA | 0 | 
                                
                                0%
                             | 
| 99 | 1 | 
                                
                                0.2%
                             |