Fig. 4From: Smoking exposure, loss of forced expiratory volume in one second and the risk of lung cancer among patients with malignant disease who present with cardiac or pulmonary symptoms: a cross-sectional studyRelationship between smoking exposure and FEV1 loss (% of the predicted value) with 95% CIs as shaded bands around the trend lines in patients with lung cancer (solid lines) and other cancers (dotted lines) from the 5th (0 pack years) to the 95th percentile (70 pack years) of the predictor variableBack to article page