Changing trends and characteristics of peptic ulcer disease: A multicenter study from 2010 to 2019 in Korea

Figure 1 Flow chart of the study. OMOP-CDM: Observational Medical Outcomes Partnership-Common Data Model; AUMC: Ajou University Medical Center; DCMC: Daegu Catholic Medical Center; EUMC: Ewha Womans University Medical Center; GNUH: Gyeongsang National University Hospital; KDH: Kangdong Sacred Heart Hospital; KNUH: Kangwon National University Hospital; WKUH: Wonkwang University Hospital; PPI: Proton pump inhibitor; PUD: Peptic ulcer disease; H. pylori: Helicobacter pylori.

Figure 2 Yearly trend of peptic ulcer disease according to age group, etiology in total, in the old age (≥ 65) group, and in the young age (< 65) group. A: Age group; B: Etiology in total group; C: Etiology in the old age (≥ 65) group; D: Etiology in the young age (< 65) group. PUD: Peptic ulcer disease; HP: Helicobacter pylori. ¹P for trend after 2014.