Figure 2
The relationship between natural log (LN) IL-13 concentrations in pg/mL and % predicted DLCO. The line was calculated using conditional standardization of the regression results for a patient with mean and modal values for the covariates in the model. The standardized line thus represents the relationship between IL-13 and DLCO for a man, age 63, with a FEV1 of 51 % predicted, who does not currently smoke, with mean pack year smoking history of 52.5 years, who is not on statins or systemic steroids, but is on inhaled steroids (β = -0.02).