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食物频度问卷的信度和效度评价 被引量:8

Assessment of reliability and validity of food frequency questionnaire
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摘要 目的:对食物频度问卷的信度和效度进行考察。方法:对101名同济大学在校大学生进行两次食物频度问卷调查和1次3日膳食记录.两次食物频度问卷调查的时间间隔为3周。采用Wilcoxon符号等级检验和Spearman等级相关系数进行统计学分析。结果:两次食物频度问卷个体营养素摄入量的中位数差别小于10%;二者显著相关.相关系数在0.382和0.727之间(P<0.001)。食物频度问卷与3日膳食记录所测各营养素的中位数除胆固醇(31.32%)外差别不大;相关系数校正后为0.232~0.646,除胆固醇(P=0.064)外,其余均有统计学意义(P<0.05)。结论:食物频度问卷具有较好的信度和效度.但明显高估了胆固醇的摄入量,故需要对问卷作进一步的改进,才可以更好地评估研究对象的膳食结构。
出处 《第二军医大学学报》 CAS CSCD 北大核心 2008年第5期571-573,共3页 Academic Journal of Second Military Medical University
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参考文献6

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二级参考文献30

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