[A case-control study of stomach cancer in Changle, Fujian Province--by the risk state analysis]. 
In order to detect the risk factors of stomach cancer in Changle county, a case-control study was undertaken.  The present paper reports on the results of risk-state analysis.  It showed that taking mildewed and heavily salty food, having bad eating habits, family history of tumour, less consumption of fresh vegetables, meat and bean products were the risk factors of stomach cancer in this county.