From: The genetics of smoking in individuals with chronic obstructive pulmonary disease
Baseline | Year 1 | Year 5 | ||||
---|---|---|---|---|---|---|
Smokers | Smokers | Quitters | Continuous smokers | Sustained quitters | Intermittent quitters | |
N (%) | 4102 | 2946 | 1156 | 2175 | 717 | 1210 |
Age* (years) | 48.6 ± 6.7 | 49.4 ± 7 | 50.0 ± 6.7 | 53.3 ± 6.7 | 54.2 ± 6.6 | 53.7 ± 6.7 |
Gender (male) | 2853 (63%) | 1837 (62%) | 746 (65%) | 1366 (63%) | 481 (67%) | 736 (61%) |
BMI (kg/m2) | 25.5 ± 3.8 | 25.7 ± 3.9 | 27.3 ± 4.0 | 26.0 ± 4.2 | 28.4 ± 4.3 | 27.5 ± 4.2 |
FEV1% predicted | 78.6 ± 9.0 | 78.0 ± 9.8 | 81.8 ± 9.5 | 72.8 ± 12.0 | 80.3 ± 10.9 | 77.2 ± 11.5 |
eCO (ppm) | 32.4 ± 16.1 | 24.8 ± 13.2 | 4.8 ± 2.5 | 25.4 ± 13.8 | 4.0 ± 2.4 | 9.6 ± 11.1 |
Cotinine (ng/ml) | 361.4 ± 199.3 | 302.7 ± 146.3 | 92.2 ± 158.7 | 343.1 ± 195.3 | 27.8 ± 132.4 | 117.5 ± 229.6 |
CPD cigarettes/day | 21.9 ± 14.5 | 21.9 ± 14.5 | 0 ± 0 | 23.0 ± 12.9 | 0 ± 0 | 5.3 ± 10.2 |