Clinical profiles of current and ex-smokers
| n | %D | Age | CC | Packs/day | Duration | LAA | %Kco† | %FEV1.0 | |
|---|---|---|---|---|---|---|---|---|---|
| Values are mean (SD). | |||||||||
| CC=lifelong cigarette consumption (pack years); duration=duration of smoking period (years); %D=percentages of subjects with genotype D; LAA=low attenuation area score on CT scan; Kco=carbon monoxide transfer coefficient; FEV1.0=forced expiratory volume in 1 second. | |||||||||
| *p<0.05, **p<0.01, by t test. | |||||||||
| ##p<0.01, χ2=10.1, by χ2 test. | |||||||||
| †n=76 current smokers and 94 ex-smokers in this analysis. | |||||||||
| Current smokers | 92 | 41.3 | 64 (8) | 60 (27) | 1.50 (0.64) | 41 (10) | 4.5 (4.5) | 84 (29) | 76 (24) |
| Ex-smokers | 111 | 20.7 | 69 (10) | 62 (37) | 1.56 (0.79) | 40 (11) | 7.3 (5.8) | 76 (32) | 66 (30) |
| p value | <0.01## | <0.01** | 0.62 | 0.59 | 0.59 | <0.01** | 0.10 | 0.01* | |