Research Article

The Correlation between the Use of the Proton Pump Inhibitor and the Clinical Efficacy of Immune Checkpoint Inhibitors in Non-Small Cell Lung Cancer

Figure 3

The Publication bias. (a) Funnel plot analysis of overall survival (OS). (b) Funnel plot analysis of progression-free survival (PFS). (c) Begg’s funnel plots for evaluating the publication bias of overall survival (OS). (d) Begg’s funnel plots for evaluating the publication bias of progression-free survival (PFS).
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