Figures & data
Table 1. Subjects’ demographics.
Table 2. Lung function parameters
Figure 1. FEV1% of predicted and FEV1/FVC ratio in CS-mild and CS-heavy. P< 0.05 compared to CS-mild.
![Figure 1. FEV1% of predicted and FEV1/FVC ratio in CS-mild and CS-heavy. P< 0.05 compared to CS-mild.](/cms/asset/13162fe4-40af-4b1a-a075-a1ddcd9dd44e/icop_a_565090_f0001_b.jpg)
Figure 2. Airway resistance (Raw) and airway specific conductance (sGaw) values in CS-mild and CS-heavy. The median and ranges (boxes) are shown. P< 0.05 compared to CS-mild. Unit (U), the quality of y-axis is representing Raw (kPa·l−1·s) and sGaw (s−1·kPa−1).
![Figure 2. Airway resistance (Raw) and airway specific conductance (sGaw) values in CS-mild and CS-heavy. The median and ranges (boxes) are shown. P< 0.05 compared to CS-mild. Unit (U), the quality of y-axis is representing Raw (kPa·l−1·s) and sGaw (s−1·kPa−1).](/cms/asset/97bec34a-faa2-45d9-8863-2e9fb839bca1/icop_a_565090_f0002_b.gif)
Figure 3. Spearman's correlation between smoking history (pack-years) and airway specific conductance (sGaw). A significant negative correlation between smoking history (pack-years) and decline of airway conductance (p = 0.004, r = – 0.39).
![Figure 3. Spearman's correlation between smoking history (pack-years) and airway specific conductance (sGaw). A significant negative correlation between smoking history (pack-years) and decline of airway conductance (p = 0.004, r = – 0.39).](/cms/asset/28699fb1-54e4-449a-8a04-eb7cd88da6d8/icop_a_565090_f0003_b.gif)
Table 3. Relationships between lung function values, smoking history and age in smokers
Table 4. Characteristics of emphysematous lesions in chronic smokers