| Value | Category | Cases | |
|---|---|---|---|
| 1 | More comfortable | 610 | 
                                    
                                    33.1%
                                 | 
| 2 | Less comfortable | 477 | 
                                    
                                    25.9%
                                 | 
| 3 | No difference whether smoking or not | 754 | 
                                    
                                    41%
                                 | 
| Sysmiss | 59 |