Fig. 4: Kaplan–Meier plots of survival in high and low neutrophil-to-lymphocyte ratio (NLR) subgroups of the sintilimab group.

a Overall survival with NLR at baseline. b Progression-free survival with NLR at baseline. c Overall survival with NLR at 6 weeks post treatment. d Progression-free survival with NLR at 6 weeks post treatment. HR hazard ratio. P-values were based on a two-sided log-rank test.