Supplementary Material for: Factors Associated with Gastric Black Spot, White Flat Elevated Mucosa, and Cobblestone-Like Mucosa: A Cross-Sectional Study
2018-06-05T14:20:57Z (GMT) by
<b><i>Background/Aims:</i></b> Previous studies have reported a possible relevance between proton pump inhibitor (PPI) use and 3 new gastric mucosal changes: black spots (BSs), white flat elevated mucosa (WFEM), and cobblestone-like mucosa (CLM). The aim of this study was to investigate the association between these mucosal changes and multiple factors including PPI use. <b><i>Methods:</i></b> All subjects who underwent a routine esophagogastroduodenoscopy (EGD) were successively enrolled. Endoscopists carried out the EGD after being blinded about information on patient PPI usage and determined the presence of these mucosal changes. The ratio of each factor was compared in cases with and without each gastric finding. <b><i>Results:</i></b> Out of 1,214 patients, BSs were recognized in 75 (6.2%) cases, WFEM in 59 (4.9%), and CLM in 41 (3.4%). In logistic regression analysis, PPI use was significantly correlated with all of these findings (BSs: OR 2.94; 95% CI 1.66–5.21), (WFEM: OR 3.58; 95% CI 1.94–6.61), and (CLM: OR 4.57; 95% CI 2.34–9.96), and <i>Helicobacter pylori</i> eradication was related to BSs (OR 3.01; 95% CI 1.73–5.24) and WFEM (OR 2.11; 95% CI 1.08–4.11). Decision-tree analyses showed that <i>H. pylori</i> eradication was associated with all findings. <b><i>Conclusions:</i></b> All of the considered findings were correlated with PPI and <i>H. pylori</i> eradication.