Esophageal adenocarcinoma arising from Barrett's metaplasia has regional variations in the west Janusz A. Jankowski, Dawn Provenzale, Paul Moayyedi Gastroenterology Volume 122, Issue 2, Pages 588-590 (February 2002) DOI: 10.1053/gast.2002.31599 Copyright © 2002 American Gastroenterological Association Terms and Conditions
Fig. 1 Funnel plot of data in the United Kingdom. Reported cancer risk versus size of study. The data by Shaheen et al.,2 is shown and indicates a bias, whereas the data from the United Kingdom does not. Gastroenterology 2002 122, 588-590DOI: (10.1053/gast.2002.31599) Copyright © 2002 American Gastroenterological Association Terms and Conditions