Table 4. Subgroup analysis for light, moderate, and heavy drinking versus non-drinkers and the risk of gastric cancer.

	Subgroup	Light alcohol	P value	Moderate alcohol	P value	Heavy alcohol	P value
Country	US or Europe	1.00 (0.87–1.15)	0.961	1.03 (0.87–1.22)	0.721	1.20 (1.03–1.41)	0.021
	Asia	0.93 (0.85–1.02)	0.108	1.06 (0.97–1.15)	0.177	1.12 (1.04–1.20)	0.002
	US or Europe vs Asia	1.08 (0.91–1.27)	0.393	0.97 (0.80–1.17)	0.766	1.07 (0.90–1.27)	0.433
Sample size	≥ 10000	0.95 (0.86–1.04)	0.270	1.07 (0.99–1.15)	0.101	1.13 (1.06–1.21)	< 0.001
	< 10000	0.93 (0.79–1.10)	0.393	0.92 (0.61–1.39)	0.686	1.23 (0.89–1.70)	0.214
	≥ 10000 vs < 10000	1.02 (0.84–1.24)	0.827	1.16 (0.77–1.77)	0.479	0.92 (0.66–1.28)	0.615
Gender	Men	0.96 (0.90–1.03)	0.302	1.06 (0.97–1.14)	0.188	1.13 (1.06–1.22)	0.001
	Women	0.74 (0.57–0.98)	0.035	1.30 (0.90–1.87)	0.156	1.33 (0.79–2.24)	0.285
	Men vs women	1.30 (0.98–1.72)	0.068	0.82 (0.56–1.19)	0.285	0.85 (0.50–1.44)	0.544
Reported	GC incidence	0.98 (0.90–1.06)	0.551	1.08 (0.99–1.17)	0.102	1.18 (1.08–1.29)	< 0.001
outcomes	GC mortality	0.87 (0.73–1.05)	0.141	1.01 (0.88–1.15)	0.942	1.07 (0.97–1.19)	0.170
	GC incidence vs GC mortality	1.13 (0.92–1.37)	0.242	1.07 (0.91–1.25)	0.405	1.10 (0.96–1.26)	0.157
Adjusted	Yes	0.95 (0.89–1.02)	0.173	1.07 (0.98–1.17)	0.119	1.17 (1.08–1.26)	< 0.001
BMI or not	No	1.00 (0.80–1.26)	0.985	0.98 (0.83–1.15)	0.781	1.05 (0.93–1.19)	0.440
	Yes vs no	0.95 (0.75–1.20)	0.672	1.09 (0.91–1.31)	0.353	1.11 (0.96–1.29)	0.145
Adjusted	Yes	0.91 (0.81–1.02)	0.106	1.02 (0.90–1.17)	0.722	1.10 (0.99–1.22)	0.070
educational	No	0.97 (0.84–1.10)	0.606	1.07 (0.98–1.18)	0.133	1.16 (1.06–1.26)	0.001
attainment	Yes vs no	0.94 (0.79–1.12)	0.480	0.95 (0.81–1.12)	0.559	0.95 (0.85–1.05)	0.327
Adjusted	Yes	0.83 (0.57–1.20)	0.317	1.04 (0.91–1.20)	0.558	1.13 (0.99–1.28)	0.070
physical	No	0.97 (0.90–1.04)	0.373	1.05 (0.97–1.15)	0.223	1.14 (1.05–1.23)	0.001
activity	Yes vs no	0.86 (0.59–1.25)	0.420	0.99 (0.84–1.17)	0.908	0.99 (0.85–1.15)	0.909