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

Table 2 Distribution of diseases in different regions of the stomach, n (%)

	Total	NAG, %	AG/IM, %	GPLs, %	GC, %	Other tumors, %
Total	53584 (100)	64.22	27.94	5.09	2.71	0.17
Cardia	2135 (3.98)	2.47	0.99	0.25	0.27	0.00
Gastric body	13599 (25.38)	20.36	3.46	0.60	0.96	0.10
Antrum	27201 (50.76)	31.71	15.47	2.75	0.84	0.04
Angularis	8583 (16.02)	6.23	7.78	1.45	0.57	0.02
Fundus	1730 (3.23)	3.09	0.06	0.02	0.05	0.01
Pylorus	336 (0.63)	0.38	0.20	0.03	0.02	0.00

NAG: Nonatrophic gastritis; AG/IM: Atrophic gastritis/intestinal metaplasia; GPLs: Gastric precancerous lesions; GC: Gastric cancer.