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Forest plot of RFSPem according to the prespecified subgroups. The multivariable Cox proportional-hazards model was used to estimate the hazard ratios for the risk of recurrence after adjuvant pembrolizumab among all patients. The solid circle indicates hazard ratio (HR) for the risk of recurrence. The bar represents the 95% confidence interval (CI) for each HR. The P value for the comparison is also represented.
