Table 3.

Other Studies Including Information of the Association between Fish Consumption and Risk of Gastric Cancer

Study	Design	Methods	Country	No. of Cases/No. of Non-cases	Information Provided
Campbell, 2008	PCC	Factor analysis	Canada	1169/2332	The loading score of fresh fish is larger than 25 which means fish is a protective factor for gastric cancer
Nomura, 2003	PCC	Geometric mean comparison	USA	230/446	No remarkable differences in the intake of fish between case and control group
Kim, 2004	Cohort	Factor analysis	Japan	400/41712	Fish consumption loads more on traditional dietary pattern than healthy dietary pattern in male and female respectively. healthy pattern decreased the risk of gastric cancer among females, while the traditional pattern increased the risk in both genders

Abbreviations: PCC: population-based case-control study; HCC: hospital-based case-control study