Endoscopists and endoscopic assistants’ qualifications, but not their biopsy rates, improve gastric precancerous lesions detection rate

Figure 2 Proportion of biopsies from different sites and distribution of gastric diseases. A: The proportions of biopsies from different sites are shown; B: The proportions of different diseases are shown. The horizontal axis represents different diseases, and the vertical axis represents different proportions (%); C: The proportions of different diseases in different regions of the stomach are shown. The horizontal axis represents different regions of the stomach, and the vertical axis represents different proportions (%). NAG: Nonatrophic gastritis; AG/IM: Atrophic gastritis/intestinal metaplasia; GPLs: Gastric precancerous lesions; GC: Gastric cancer.