| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never smoked cigarettes | 3440 | 
                                                                 
                                    
                                    96.3%
                                 
                                                             | 
                                                        
                    
| 2 | Did not smoke cigarettes | 49 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    
| 3 | Yes | 62 | 
                                                                 
                                    
                                    1.7%
                                 
                                                             | 
                                                        
                    
| 4 | No | 22 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 233 |