Fig. 1.
Gastric bile acid concentrations according to the endoscopic bile reflux grading. There was a significant difference in each bile acid level according to the endoscopic bile reflux grading (all P < 0.05). There were significant differences in CA, TCA, CDCA, GCDCA, and DCA levels between BR grades 0 and 1 (all P < 0.01). In addition, there were significant differences in CA, TCA, CDCA, GCDCA, and DCA levels between BR grades 0 and 2 (all P < 0.05). BA: bile acid; CA: cholic acid; TCA: taurocholic acid; LCA: lithocholic acid; CDCA: chenodeoxycholic acid: GCDCA: glycochenodeoxycholic acid; DCA: deoxycholic acid. *P < 0.05, **P < 0.01, and ***P < 0.001 when compared to grade 0
