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Scatter plots of hazard ratios by trial (disease-free survival [DFS] v overall survival [OS]). (A) Three-year DFS versus 5-year OS (actual data). (B) Three-year DFS versus 5-year OS (hypothetical data, doubled time from recurrence to death). (C) Three-year DFS versus 6-year OS (hypothetical data, doubled time from recurrence to death). (D) Three-year DFS versus 7-year OS (hypothetical data, doubled time from recurrence to death).
