. Author manuscript; available in PMC: 2024 May 1.

Published in final edited form as: Eur J Cancer Prev. 2023 Mar 13;32(3):222–228. doi: 10.1097/CEJ.0000000000000754

Table 2.

Results of subgroup analysis for the association between mushroom intake (highest vs. lowest categories) and gastric cancer risk.

Subgroup	No. of studies	Pooled RR (95% CI)	I² (%)	P for heterogeneity between subgroups
Study design				0.09
Cohort	2	1.27 (0.70, 2.31)	0
Case-control	13	0.74 (0.60, 0.92)	58
WHO region				0.13
Americas	4	0.88 (0.53, 1.46)	0
Europe	5	0.93 (0.74, 1.16)	34
Western Pacific	6	0.59 (0.40, 0.87)	71
Total Energy				0.23
Adjusted	8	0.84 (0.69, 1.03)	41
Not adjusted	7	0.62 (0.39, 0.99)	66
World Bank income groups				0.41
HIC	9	0.75 (0.55, 1.02)	71
LMIC	6	0.87 (0.72, 1.06)	0