Fig. 1From: Development of a nomogram for predicting the presence of combined pulmonary fibrosis and emphysemaStudy flow. *Three indicators (gender (males), smoking, allergies) with statistically significant differences (P < 0.05) in the results of the univariate analysis, as well as two key pulmonary function index (FEV1/FVC, DLCO/VA%pred), were included in the multivariable logistic regression analysis to identity independent risk factorsBack to article page