Figure 1From: Barrett’s esophagus and the risk of obstructive sleep apnea: a case–control study Distribution of Severe Gastroesophageal Reflux Symptoms by Group. Distribution of severe heartburn symptoms (1A) and severe regurgitation symptoms (1B) by group. Severe symptoms were defined as lifestyle-affecting. P values presented are results of Mantel-Haenszel chi-square tests.Back to article page