云锡矿工食物频率问卷的信度和效度研究

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的信度和效度。信度研究是将间隔一年的食物频率问卷资料相比较做相关分析；效度研究是以１９９５年四季２８天２４小时饮食回顾调查资料为标准，将食物频率问卷资料调查结果与其比较做相关分析。以一致率来评价膳食调查工具的可靠程度。

REPRODUCIBILITY AND VALIDITY OF A FOOD FREQUENCY QUESTIONNAIRE AMONG YTC MINERS

This poper evaluated the reproducibility and validity of a food frequency questionnaire (FFQ) used in a prospective study among Yunnan Tin Corporation (YTC) miners. The reproducibility of the FFQ was studied with correlation analysis of 84 individual food frequency and nutrient intakes in 95FFQ with those in 94FFQ. The validity was assessed with correlation analysis of 81 individual food frequency and nutrient intakes in 95FFQ with those in four quarters of seven consecutive days of 24-hour food and beverage recalls (24H-R). The results showed that the coincidences of individual food intakes in reproducibility and validity were both lower than 60%. However, the coincidence of nutrient intakes in reproducibility and validity was 70% and 87%,respectively. It might be appropriate to use the questionnaire in studies on nutrients and diseases, but it must be with cautions to use this questionnaire in studies on food and diseases.