Systematic Review on Epidemiology of Gastroesophageal Reflux Disease in Asia  Benjamin C.Y. Wong, Yoshikazu Kinoshita  Clinical Gastroenterology and Hepatology  Volume 4, Issue 4, Pages 398-407 (April 2006) DOI: 10.1016/j.cgh.2005.10.011 Copyright © 2006 American Gastroenterological Association Institute Terms and Conditions

Figure 1 The risk factors for (A) GERD and its main esophageal complication (B) reflux esophagitis. Odds ratios with 95% confidence intervals. Data from Rosaida et al.39 dx = diagnosis. Clinical Gastroenterology and Hepatology 2006 4, 398-407DOI: (10.1016/j.cgh.2005.10.011) Copyright © 2006 American Gastroenterological Association Institute Terms and Conditions

Figure 2 Prevalence of GERD (defined as heartburn and/or acid regurgitation at least once a week or at least once a month) in Japan. ■, at least monthly; ●, at least weekly. Reprinted with permission from Hirakawa et al.21 Clinical Gastroenterology and Hepatology 2006 4, 398-407DOI: (10.1016/j.cgh.2005.10.011) Copyright © 2006 American Gastroenterological Association Institute Terms and Conditions

Figure 3 The prevalence of H pylori infection in Japan. ▴, 1974; ●, 1984; ■, 1994. Reprinted with permission from Fujisawa et al.47 Clinical Gastroenterology and Hepatology 2006 4, 398-407DOI: (10.1016/j.cgh.2005.10.011) Copyright © 2006 American Gastroenterological Association Institute Terms and Conditions