| Value | Category | Cases | |
|---|---|---|---|
| 1 | Current smoker | 22022 | 
                                                                 
                                    
                                    18.5%
                                 
                                                             | 
                                                        
                    
| 2 | Former smoker | 4326 | 
                                                                 
                                    
                                    3.6%
                                 
                                                             | 
                                                        
                    
| 3 | Never smoker | 92882 | 
                                                                 
                                    
                                    77.9%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 5242 |