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. 2010 Sep 7;103(6):776–786. doi: 10.1038/sj.bjc.6605863

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Copyright © 2010 Cancer Research UK

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Kaplan–Meier recurrence-free survival curves for the Churchill Hospital (A) and ABC (B) data sets for five prognostic groups. (NPI cutoff values used to create groups are ⩽2.4, 2.41 to 3.4, 3.41 to 4.4, 4.41 to 5.4, and >5.4).