Validation of Dietary Antioxidant Index (DAI) and investigating the relationship between DAI and the odds of gastric cancer

Table 5 Odds ratios and confidence intervals for the association between dietary antioxidant index (DIA) and gastric cancer (n = 177)

DAI	DAI (categorical)^c OR and 95% CI		p value ^a	DAI (continuous) OR and 95% CI	p value
	− 0.19 ≤	− 0.19 >
	1 (ref.)	0.68 (0.37–1.24)	0.20^a	0.65 (0.45–0.93)	0.02^a
	1 (ref.)	0.72 (0.36–1.42)	0.34^b	0.64 (0.43–0.95)	0.02^b
DAQS	DAQS (categorical) OR and 95% CI
	DAQS ≤ 3	DAQS > 3
	1 (ref.)	1.32 (0.69–2.53)	0.39^a
	1 (ref.)	1.30 (0.61–2.73)	0.48^b

^aAge-adjusted
^b Additionally adjusted for gender, body mass index, smoking, education, H. pylori infection, alcohol consumption, aspirin/NSAIDs use, physical activity, cancer history in the first-degree family, total energy intake
^cMedian

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