Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, Henan450001, People's Republic of China.
Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan450001, People's Republic of China.
Public Health Nutr. 2020 Jan;23(1):34-40. doi: 10.1017/S1368980019002416. Epub 2019 Sep 2.
The present study aimed to evaluate the validity and reproducibility of a thirteen-item FFQ regarding identification of dietary conditions in a rural population in China.
A reproducibility study repeated the first FFQ (FFQ1) approximately 4 weeks later (FFQ2). A validity study evaluated the mean of three consecutive 24 h diet recalls as the reference measure.
Cross-sectional study.
Residents of a rural area in Henan Province, which is located in the central region of China.
A total of 295 individuals participated in the reproducibility study. In addition, 123 people agreed to participate in the validity study. Spearman's correlation coefficients between the two FFQ ranged from 0·06 (vegetables) to 0·58 (eggs). Spearman's correlation coefficients between the two methods of collection ranged from 0·01 for cereal to 0·49 for staple foods. The mean of the intraclass correlation coefficients of the two FFQ (FFQ1 v. FFQ2) was 0·19. Bland-Altman analysis indicated good agreement for most food groups across the range of intake for the two studies.
The study demonstrated that our FFQ design could be used as a representative tool to conduct a dietary evaluation of a rural population.
本研究旨在评估一份包含十三个项目的 FFQ 在中国农村人群中识别饮食状况的有效性和可重复性。
一项重复性研究在大约四周后重复第一次 FFQ（FFQ1）（FFQ2）。一项有效性研究将连续三天的 24 小时饮食回忆的平均值作为参考测量值进行评估。
横断面研究。
居住在中国中部河南省农村地区的居民。
共有 295 人参加了重复性研究。此外，有 123 人同意参加有效性研究。两个 FFQ 之间的斯皮尔曼相关系数范围从 0.06（蔬菜）到 0.58（鸡蛋）。两种采集方法之间的斯皮尔曼相关系数范围从谷物的 0.01 到主食的 0.49。两个 FFQ（FFQ1 v. FFQ2）的组内相关系数的平均值为 0.19。Bland-Altman 分析表明，两种研究的摄入量范围内，大多数食物组之间具有良好的一致性。
该研究表明，我们的 FFQ 设计可以作为对农村人群进行饮食评估的代表性工具。
