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据《中华预防医学杂志》1995年29卷第6期报道 大连医科大学流行病学教研室李东光等为进一步深入研究膳食营养素与胃癌发病的联系,提出了营养素密度的概念,研究了膳食脂肪、蛋白质、碳水化合物、维生素A、C、E及β-胡萝卜素的营养素密度与胃癌的关系。 采用1:1病例对照设计,获得具有可靠资料的对子88对,以研究对象10年前50种摄入较多的主要食物作为重点,采用国际上应用较多的频度估计法获得信息,即由被调查者对各种食物的摄入频度及每次摄入量给出最适估计。
According to the report of Chinese Journal of Preventive Medicine, 1995, Vol.29, No.6, Li Dongguang, Department of Epidemiology, Dalian Medical University, etc., to further study the relationship between dietary nutrients and the incidence of gastric cancer, the concept of nutrient density was proposed, and dietary fat, protein, The relationship between the nutrient density of carbohydrate, vitamin A, C, E and β-carotene and gastric cancer. 1:1 case-control design was used to obtain pairs of 88 pairs with reliable data. The study focused on the 50 main foods that were ingested more than 10 years ago as the focal point, and used internationally more frequently used frequency estimation methods to obtain information. That is, the respondents gave the best estimate of the intake frequency and the amount of each intake of various foods.