Characteristics of cases of Barrett’s esophagus and population controls.

† Pearson’s chi-square test for categorized variables and student t-test for continuous variables. ‡ The cut-offs for neck circumference were tertiles (t): males t1 0–39.05 cm; t2 39.05–41.40 cm, t3 > 41.40 cm females t1 0–33.45 cm; t2 33.45–35.55 cm; t3 > 35.55 cm. §The participants were asked if how often they had acid regurgitation or heartburn when the symptoms were most frequent. Characteristics of cases of Barrett’s esophagus and population controls.