| gender | age | fagerstrom | carbonmonoxide(ppm) | cigarette(per day) | |
| male | mean | 40,41 | 6,57 | 12,3 | 23,97 |
| n | 933 | ||||
| standart deviation | 12,78 | 2,22 | 6,71 | 8,39 | |
| female | mean | 39,00 | 6,59 | 11,13 | 2,29 |
| n | 413 | ||||
| standart deviation | 11,14 | 2,09 | 6,37 | 8,47 | |
| total | mean | 39,98 | 6,57 | 11,93 | 23,45 |
| n | 1346 | ||||
| standart deviation | 12,30 | 2,18 | 6,62 | 8,45 |
demographic data of patients