Yuan Xue1, Kaili Yang2,3, Bingya Wang1, Chang Liu1, Zhenxing Mao2, Songcheng Yu1, Xing Li1, Yan Wang1, Hualei Sun1, Chongjian Wang2, Wenjie Li1. 1. Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, Henan450001, People's Republic of China. 2. Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan450001, People's Republic of China. 3. Henan Provincial People's Hospital, Henan Eye Hospital, Henan Eye Institute, People's Hospital of Zhengzhou University, Zhengzhou, Henan, People's Republic of China.
Abstract
OBJECTIVE: 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. DESIGN: 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. SETTING: Cross-sectional study. PARTICIPANTS: Residents of a rural area in Henan Province, which is located in the central region of China. RESULTS: 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. CONCLUSIONS: The study demonstrated that our FFQ design could be used as a representative tool to conduct a dietary evaluation of a rural population.
OBJECTIVE: 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. DESIGN: 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. SETTING: Cross-sectional study. PARTICIPANTS: Residents of a rural area in Henan Province, which is located in the central region of China. RESULTS: 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. CONCLUSIONS: The study demonstrated that our FFQ design could be used as a representative tool to conduct a dietary evaluation of a rural population.
Authors: Wei Liao; Xiaotian Liu; Ning Kang; Yu Song; Yinghao Yuchi; Ze Hu; Jian Hou; Chongjian Wang; Yuqian Li Journal: Qual Life Res Date: 2022-08-16 Impact factor: 3.440