| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1.Grade 1 | 493 | 
                                
                                50.2%
                             | 
| 2 | 2.Grade 2 | 380 | 
                                
                                38.7%
                             | 
| 3 | 3.Grade 3 | 77 | 
                                
                                7.8%
                             | 
| 4 | 4.Grade 1 & 2 | 14 | 
                                
                                1.4%
                             | 
| 5 | 5.Grade 1 & 3 | 0 | 
                                
                                0%
                             | 
| 6 | 6.Grade 2 & 3 | 0 | 
                                
                                0%
                             | 
| 7 | 7.The 3 grades | 17 | 
                                
                                1.7%
                             | 
| 95 | 95.Missing | 0 | 
                                
                                0%
                             | 
| 99 | 99.NA | 1 | 
                                
                                0.1%
                             |