目的:对自行编制的食物频率问卷进行效度检验，探究其是否可用于孕期妇女的膳食调查及规模人群营养流行病学调查。方法:以在孕早期(10～13w+6 d)完成食物频率(FFQ)调查，并收集到3天24小时膳食回顾(3days 24HR)数据的111名孕妇作为调查对象。采用Wilcoxon配对秩和检验比较两种方法摄入量之间的差异;采用Spearman相关系数评估两种方法的一致性程度;采用Bland-Altman图用于比较两种方法所得平均总能量和宏量营养素摄入量的差异。结果:使用FFQ调查与3 days 24HR调查对热量、主食及蔬菜的摄入量估计无统计学差异。热量、三大宏量营养素的Spearman相关系数范围为0。249(脂肪)～0。529(蛋白质)。除主食、薯类、菌藻类及水果外，其他食物组的相关性均有统计学意义，Spearman相关系数范围为0。180(粗粮)～0。578(奶制品)。Bland-Altman图显示，热量、蛋白质及脂肪的比值均在1附近。结论:本研究设计的较为短小的食物频率问卷的效度较好，可以用于孕期孕妇的膳食调查，也可用于开展大规模人群营养流行病学调查。
Comparison of Food Frequency Questionnaire in Early Pregnancy with 3 days 24-Hour Recall
[Objective]To evaluate the validity of a food frequency questionnaire (FFQ) designed to assess nutrient intake of pregnant women and other common population.[Method]A total of 111 pregnant women who completed the FFQ and 3 days 24-hour recall(3days 24HR) during 10 to 13 week were included in our study. Wilcoxon Rank-Sum Test and Bland-Altman method were uesd to compare the dif-ference of intake between FFQ and 3 days 24-hour recall. Consistency was measured by Spearman's rank correlation.[Result]In general,mean intake of energy,cereals and vegetables was consistant when assessed with FFQ compared with 3 days 24-hour recall. For energy and three macronutrients,the Spearman correlation coefficients between the two assessment tools ranged from 0.249(fat)-0.529(protein). The Spearman correlation coefficients ranged from 0.180(grains)-0.578(milk and milk products) in different food groups,with the exception of cereals,tuber,phytocomycetes and fruits. Bland-Altman plots revealed significant relationships between the ratios and the average of the two methods,and the ratios of energy,protein and fat were around 1.[Conclusion]This FFQ is a reasonably valid tool for assessing most food and nutrient intakes of pregnant women and and other common population.
food frequency questionnaire3 days 24-hour recall(3days24HR)pregnant womenvaliditySpearman Correlation Coefficients
国家科技期刊平台
NSTL
万方数据
