| Value | Category | Cases | |
|---|---|---|---|
| 1 | Measured | 5325 | 
                                    
                                    98.6%
                                 | 
| 2 | Not present | 40 | 
                                    
                                    0.7%
                                 | 
| 3 | Sick or injured | 10 | 
                                    
                                    0.2%
                                 | 
| 4 | Refused | 8 | 
                                    
                                    0.1%
                                 | 
| 5 | Other (Specify) | 20 | 
                                    
                                    0.4%
                                 | 
| Sysmiss | 17990 |