Costs will probably vary according to local data

EDITOR,—A H Briggs et al used a decision tree to model the outcomes of treatment for the cost effectiveness of screening for and eradication of Helicobacter pylori in the management of dyspeptic patients under the age of 45 years.1

I am sure that, although many gastroenterologists would not take issue with the model that they used, the problem with exercises of this type is that “the devil is in …