Non-dietary factors and gastric cancer in residents of islands

Objective To investigate the relationships between non dietary factors and risk of gastric cancer in residents of islands. Methods A frequency matched design of case control study was used. In 103 cases of gastric cancer newly diagnosed in 2001 and 133 controls randomly selected among the residents of islands. Adjusted odds ratios (OR) and 95% confidence intervals (CI) of non dietary factors were estimated using nonconditional logistic regression models. Results Increased risks of gastric cancer ...