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3-year progression-free survival. Meta-analysis of 3 studies of ICI-RT association: 1 study of ICI-RT vs. RT alone (a) and 2 studies of ICI-RT vs. ICI alone (b). The risk ratio (RR) and 95% confidence interval (CI) for the effect of treatment on 3-year progression-free survival are shown on a logarithmic scale. Studies are arranged by publication year. Theelen study is a pooled analysis of two RCTs.
