Correlations between pulmonary function measurements and serum CXCL10 levels at initial subject visit. A) FVC, B) FEV1, C) DLCO, and D) TLC. Data are displayed as log10 transformations of serum CXCL10 levels (individual values denoted by open black circles) and fitted lines for predicted pulmonary function values (dashed lines). The β-coefficients show how the average %predicted pulmonary function values vary for every log10-increase in CXCL10 (see Supplementary Table S1) (*p <0.05, **P<0.01). Both fitted lines and β-coefficients were adjusted for prior smoking and immunosuppression use. Abbreviations: FEV1 = Forced Expiratory Volume in 1 Second, FVC= Forced Vital Capacity, DLCO = Diffusing Capacity for Carbon Monoxide.