Fig. 2

Kaplan–Meier (K-M) survival curve analysis. A K-M survival curves of PFS between the high and low PNI subgroups in early patients. B K-M survival curves of PFS between the high and low PNI subgroups in advanced patients. C K-M survival curves of OS between the high and low PNI subgroups in early patients. D K-M survival curves of OS between the high and low PNI subgroups in advanced patients. E K-M survival curves of PFS between the high and low SII subgroups in early patients. F K-M survival curves of PFS between the high and low SII subgroups in advanced patients. G K-M survival curves of OS between the high and low SII subgroups in early patients. H K-M survival curves of OS between the high and low SII subgroups in advanced patients. OS, Overall survival; PFS, Progression-free survival; PNI, Prognostic Nutritional Index; SII, Systemic immune-inflammation index