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  • Title: Usefulness of correlation analyses in the epidemiology of stomach cancer.
    Author: Tominaga S, Ogawa H, Kuroishi T.
    Journal: Natl Cancer Inst Monogr; 1982; 62():135-40. PubMed ID: 7167176.
    Abstract:
    To detect the risk factors for stomach cancer, we performed correlation analyses among stomach cancer mortality, food consumption, and other related factors using population-based data. Cereals (especially rice) and salty foods (particularly salted and dried fish) were related positively to stomach cancer mortality; milk and milk products, meat, oils and fats, and fruits were related inversely to it. We believe these results show that factors related positively to stomach cancer mortality could play a role in risk and those related inversely could be protective in the etiology of stomach cancer. As complementary methods in case-control and cohort studies, correlation analyses seemed useful when variation of exposures to risk factors is small between individuals within a population but is relatively large between populations.
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