ffq
- 网络食物频率问卷;食物频率问卷法;放水器
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Food Frequency Questionnaire ( FFQ ) was used for the dietary survey , and duration of the diet retrospect was one year .
膳食调查采用食物频率询问法（FFQ），回顾年限为1年。
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Objective : To validate the food frequency questionnaire ( FFQ ) with3d weighted food record ( WFR ) in assessing the dietary energy and nutrients intake .
目的：食物频率问卷法（FFQ）问卷评估人群膳食能量和营养素摄入量的准确性进行验证。
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This poper evaluated the reproducibility and validity of a food frequency questionnaire ( FFQ ) used in a prospective study among Yunnan Tin Corporation ( YTC ) miners .
本文研究了云锡矿工肺癌高危人群普查中所使用的食物频率问卷（FoodFrequencyQuestionnaire，FFQ）的信度和效度。