| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 1141 | 
                                    
                                    88.9%
                                 | 
| 2 | Did not smoke cigarettes | 84 | 
                                    
                                    6.5%
                                 | 
| 3 | Yes | 39 | 
                                    
                                    3%
                                 | 
| 4 | No | 20 | 
                                    
                                    1.6%
                                 | 
| Sysmiss | 73 |