Predictive significance of baseline SP-D and CCL18 for short-term changes in FVC in patients not treated with immunosuppressive agents.

Pneumoproteins	r	p_univariate	Mean Difference (95% CI)	p_multivariate^*
SP-D	0.12	0.255	0.02 (−0.01, 0.05)	0.288
CCL18	0.17	0.126	0.07 (−0.01, 0.16)	0.1
SP-D and CCL18	0.26	0.018	0.11 (0.02, 0.2)	0.019

↵* Adjusted for age, gender, ethnicity, and body mass index. SP-D: surfactant protein D; CCL18: CC-chemokine ligand 18; FVC: forced vital capacity.