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Development and validation of risk prediction equations to estimate survival in patients with colorectal cancer: cohort study

BMJ 2017; 357 doi: https://doi.org/10.1136/bmj.j2497 (Published 15 June 2017) Cite this as: BMJ 2017;357:j2497

Colorectal survival risk calculator Re: Development and validation of risk prediction equations to estimate survival in patients with colorectal cancer: cohort study

The illustration provided in the risk calculator accompanying this valuable research article appears to suggest that an otherwise well (apart from her colorectal cancer) 38 year old woman has a >30% risk of dying from other causes by the age of 48. The 40% risk of death from colorectal cancer is entirely appropriate, but the >30% additional risk from other causes seems bizarre, unless I've totally misunderstood the histogram.

Competing interests: No competing interests

17 July 2017
John Meyrick-Thomas
Consultant surgeon & endoscopist
Chorleywood
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