3.

Association between cancer prevention knowledge levels and PR for EC screening among 28,543 participants, 2007−2016

Cancer prevention knowledge levels	Model 1			Model 2			Model 3
	OR (95% CI)	P		OR (95% CI)	P		OR (95% CI)	P
PR, participation rate; EC, esophageal cancer; OR, odds ratio; 95% CI, 95% confidence interval; Model 1, Adjusted for cancer prevention knowledge levels; Model 2, Additionally, adjusted for sex, age, educational background and income status; Model 3, Additionally, adjusted for status of cigarette smoking, alcohol drinking, dietary habits of pickled food, hot food, and mildew food, unexplained esophageal symptoms, family history of cancer, and study regions.
Q1 (<40)	Ref			Ref			Ref
Q2 (40−55)	0.968 (0.905−1.036)	0.3497		0.994 (0.929−1.065)	0.8709		1.086 (1.012−1.165)	0.0221
Q3 (56−70)	1.020 (0.951−1.095)	0.5785		1.087 (1.012−1.168)	0.0219		1.225 (1.138−1.319)	<0.0001
Q4 (>70)	1.201 (1.118−1.290)	<0.0001		1.271 (1.181−1.367)	<0.0001		1.511 (1.398−1.632)	<0.0001