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The x-axis displays each strategy. The height of each column represents the average lifespan for a 35 year-old man with 10 prior years of ulcerative colitis for each strategy. In the setting of no 5-ASA, progressively shorter intervals between surveillance colonoscopy substantially improves life expectancy. Among patients already taking 5-ASA, shorter surveillance intervals also improves life expectancy, but with smaller incremental improvements.
