| Value | Category | Cases | |
|---|---|---|---|
| 1 | lying down | 170 | 
                                    
                                    25%
                                 | 
| 2 | standing | 507 | 
                                    
                                    74.7%
                                 | 
| 3 | refused impossible | 2 | 
                                    
                                    0.3%
                                 | 
| 999 | missing in survey | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 209 |