Fig. 1

Restricted cubic spline regression for the association between serum gamma-glutamyl transpeptidase, inflammation biomarkers and lung cancer. The solid line represents the estimated Hazard Ratio for lung cancer risk and the shaded areas represent 95%CI. Figure A, B, C, D, E, F, G, H, I respectively represent the associations between gamma-glutamyl transpeptidase, lymphocyte count, neutrophil count, platelet count, neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, systemic immune-inflammation index, white blood cell count, C-reactive protein and lung cancer using the model 2 cubic spline regression analyses. Model 2: adjusted for age at recruitment, sex, education level, Townsend deprivation index, body mass index, smoking status, family history of lung cancer, alcohol intake frequency, liver disease status at the baseline. GGT gamma-glutamyl transpeptidase, LC lymphocyte count, NC neutrophil count, PC platelet count, NLR neutrophil-to-lymphocyte ratio, PLR plate-let-to-lymphocyte ratio, SII systemic immune-inflammation index, WBC White blood cell count, CRP C-reactive protein.