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Meta-analysis of included clinical trials with an analysis of the ORR of PD-1 and PD-L1 inhibitors among different dose groups in patients with advanced melanoma (fixed-effects model). (A) The comparison between the median-dose cohort and the low-dose cohort (RR = 1.37, P = 0.089); (B) the comparison between the median-dose cohort and the high-dose cohort (RR = 1.00, P = 0.990); (C) the comparison between the low-dose cohort and the high-dose cohort (RR = 1.32, P = 0.357).
