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Characteristics of smokers and nonsmokers
| Control (n = 41) | Smoker (n = 85) | t | p | |
|---|---|---|---|---|
| Age (years) | 38.46 ± 8.60 | 38.24 ± 6.81 | −0.161 | .872 |
| Education (years) | 15.37 ± 4.67 | 14.01 ± 2.94 | −1.702 | .094 |
| Smoking initiation (years) | – | 20.87 ± 5.07 | – | – |
| Smoking years | – | 17.36 ± 6.58 | – | – |
| Cigarettes/day | – | 23.46 ± 9.53 | – | – |
| Pack-years | – | 20.63 ± 12.28 | – | – |
| FTND | – | 5.18 ± 2.18 | – | – |
Abbreviations: Pack-years, cigarettes/day × smoking years/20; FTND, Fagerström test for nicotine dependence.
