GSTM1 and idiopathic pulmonary fibrosis: In bivariate analyses, significant associations between baseline WBC and RBC parameters and 1-year outcomes were found for IPF progression and neutrophil and eosinophil counts; all-cause mortality and monocyte and neutrophil counts; all-cause hospitalisations and monocyte counts, neutrophil counts and Hb; and respiratory-related hospitalisations and monocyte counts, neutrophil counts and Hb.