Relative validity and reproducibility of a food frequency questionnaire used in pregnant women from a rural area of China
Relative validity and reproducibility of a food frequency questionnaire used in pregnant women from a rural area of China
复制标题
DOI：
10.1111/aogs.12460
复制
发表时间：
2014-11-01
影响因子：
4.3
通讯作者：
Strom, Marin
中科院分区：
文献类型：
--
作者：
Li, Min;Halldorsson, Thorhallur I.;Strom, Marin
食物频率问卷管理相对便宜、方便、快捷，但考虑到中国不同地区不同的生活方式和饮食习惯，构建一个能反映中国人饮食习惯的食物频率问卷是具有挑战性的。设计前瞻性队列研究。设置中国妇幼保健院。人群共168名健康孕妇。方法孕妇在妊娠16~24周完成食物频率问卷，在29~31周再次完成食物频率问卷；在26~27周期间完成3天饮食回忆。两份食物频率问卷的Spearman相关系数和类内相关系数分别为0.31~0.69和0.27~0.79。对于第二份食物频率问卷和饮食回忆，粗略的Spearman相关系数为0.12~0.55，弱化Spearman相关系数为0.14~0.58。两份食物频率问卷之间以及第二份食物频率问卷与饮食回忆之间的相关性在调整能量后都有所下降。两份食物频率问卷分别将31-57%和1-8%的女性归入相同和相反的四分位数；在第二份食物频率问卷和饮食回忆中，30-45%和1-11%的女性分别被归入相同和相反的四分位数。结论食物频率问卷显示出良好的重复性和与饮食回忆的相关性；根据食物摄入量对研究参与者进行排名是有用的，这对该队列未来的病因学研究具有重要意义。
ObjectiveFood frequency questionnaires are relatively inexpensive, easy and quick to administer, but the construction of a food frequency questionnaire that can capture Chinese food habits is challenging given the diverse lifestyle and eating habits in different parts of the country. The aim of this study was to assess the validity and reproducibility of a self-administered food frequency questionnaire against a 3-day dietary recall in a rural region of western China.DesignProspective cohort study.SettingChinese maternal and child healthcare hospital.PopulationA total of 168 healthy pregnant women.MethodsPregnant women completed a food frequency questionnaire at 16-24weeks gestation, and again at 29-31weeks; during weeks 26-27 they completed a 3-day dietary recall.ResultsIn general, mean intake was higher when assessed with food frequency questionnaires compared with dietary recall. Spearman and intra-class correlation coefficients between the two food frequency questionnaires ranged from 0.31 to 0.69 and from 0.27 to 0.79, respectively. For the second food frequency questionnaire and the dietary recall, the crude and de-attenuated Spearman correlations ranged from 0.12 to 0.55 and 0.14 to 0.58, respectively. The correlation both between the two food frequency questionnaires and between the second food frequency questionnaire and the dietary recall decreased after adjustment for energy. Ranking women, 31-57% and 1-8% were classified into the same and the opposite quartile, respectively, by both food frequency questionnaires; 30-45% and 1-11% were classified into the same and the opposite quartile respectively for the second food frequency questionnaire and dietary recall.ConclusionThe food frequency questionnaire showed good reproducibility and correlations with dietary recall; it is useful for ranking study participants according to dietary intake, which is of great importance to future etiological studies in this cohort.