Gastric cancer incidence based on endoscopic Kyoto classification of gastritis

Table 1 Demographic characteristics and endoscopic findings of the patient at baseline

	All	Gastric cancer	Non-gastric cancer	P value1
No.	6718	34	6684
Age, median (IQR), yr	54 (46-64)	69.5 (57.8-73.8)	54 (46-64)	< 0.001
Male sex, No. (%)	2969 (44.2)	17 (50.0)	2952 (44.2)	0.495
H. pylori status, No. (%)				< 0.001
Uninfected	3754 (55.9)	5 (14.7)	3749 (56.1)
Eradicated	2264 (33.7)	20 (58.8)	2244 (33.6)
Currently infected	700 (10.4)	9 (26.5)	691 (10.3)
Duration of follow up, median (IQR), yr	2.56 (1.74-3.64)	1.03 (0.85-1.78)	2.57 (1.76-3.64)	< 0.001
No. EGD per patient, median (IQR)	2 (2-4)	2 (2-3)	2 (2-4)	0.652
Kyoto classification score, median (IQR)
Atrophy	0 (0-1)	2 (1-2)	0 (0-1)	< 0.001
Intestinal metaplasia	0 (0-0)	2 (0-2)	0 (0-0)	< 0.001
Enlarged folds	0 (0-0)	0 (0-0)	0 (0-0)	< 0.001
Nodularity	0 (0-0)	0 (0-0)	0 (0-0)	0.916
Diffuse redness	0 (0-0)	1 (1-1)	0 (0-0)	< 0.001
Total Kyoto	0 (0-2)	5 (4-5)	0 (0-2)	< 0.001

¹P values were calculated using binomial logistic regression model.

IQR: Interquartile range; EGD: Esophagogastroduodenoscopy; H. pylori: Helicobacter pylori.