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OS in patients in the all-treated population after adjustments using (A) IPCW (primary analysis) and (B) TSE, RPSFT, and IPE (sensitivity analyses) methodologies. Chemo, chemotherapy; IPCW, inverse probability of censoring weighting; IPE, iterative parameter estimation; IPI, ipilimumab; NIVO, nivolumab; OS, overall survival; RPSFT, rank-preserving structural failure time; TSE, two-stage estimation; w/o, without.
