Establish a Scoring Model for High-Risk Population of Gastric Cancer and Study on the Pattern of Opportunistic Screening

Table 2

Logistic regression model coding.

Variables	Influencing factors	Quantitative method
X1	Gender	0 : female	1 : male
X2	Age	0 : <55	1 : ≥55
X3	Ethnic group	0 : Han nationality	1 : Hui nationality
X4	Drinking water	0 : tap water	1 : well water or cellar water
X5	Fresh vegetables (kg/day)	1 : <0.25	2 : 0.25-0.5	3 : >0.5
X6	Pickled products	0 : occasional	1 : often
X7	Hp infection	0 : negative	1 : positive
X8	Family history	0 : no	1 : yes
X9	PGR	0 : no	and