| Value | Category | Cases | |
|---|---|---|---|
| 1 | measured | 1272 | 
                                                                 
                                    
                                    97.8%
                                 
                                                             | 
                                                        
                    
| 2 | not measured | 20 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    
| 3 | refused | 7 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    
| 6 | other | 2 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 10935 |