Intended for healthcare professionals

Letters Flexible sigmoidoscopy screening

Numbers needed to treat and to harm should be included in research

BMJ 2017; 356 doi: (Published 10 March 2017) Cite this as: BMJ 2017;356:j1265
  1. Jacq Hawkins, GP
  1. Central Lakes Medical Practice, Ambleside LA22 9BP, UK
  1. jlavender62{at}

I was pleased to see the research article and linked editorial on flexible sigmoidoscopy screening for colorectal cancer,12 as my patients are …

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