Percentage of smokers by different smoking criteria (regular smokers, smoked today or yesterday) and by different cut off points in serum cotinine level
| North Karelia | Kuopio province | South western Finland | Helsinki capital area | Total | χ2 | |
|---|---|---|---|---|---|---|
| *χ2 test between the areas. | ||||||
| Men | ||||||
| Regular smokers | 28 | 31 | 32 | p=0.33* | ||
| Occational smokers | 7 | 8 | 9 | 29 | 30 | |
| Smoked today or yesterday | 30 | 33 | 35 | 8 | 8 | |
| Cotinine 10+ | 33 | 36 | 40 | 30 | 32 | p=0.12 |
| Cotinine 15+ | 32 | 36 | 40 | 33 | 35.7 | P=0.009 |
| Cotinine 20+ | 32 | 35 | 39 | 33 | 35 | p=0.013 |
| Cotinine 50+ | 27 | 32 | 34 | 32 | 34.4 | p=0.008 |
| 29 | 30.5 | p=0.037 | ||||
| Women | ||||||
| Regular smokers | 12 | 14 | 19 | 24 | 17 | p<0.001 |
| Occational smokers | 7 | 8 | 6 | 9 | 7 | |
| Smoked today or yesterday | 14 | 17 | 22 | 26 | 20 | p<0.001 |
| Cotinine 10+ | 18 | 19 | 23 | 30 | 23 | |
| Cotinine 15+ | 17 | 18 | 23 | 29 | 22 | p<0.001 |
| Cotinine 20+ | 17 | 18 | 22 | 29 | 21 | p<0.001 |
| Cotinine 50+ | 14 | 15 | 20 | 25 | 18 | p<0.001 |