Reproducibility and validity of an FFQ developed for adults in Nanjing, China

The British Journal of Nutrition
Qing YeFei Xu

Abstract

We evaluated the reproducibility and validity of an FFQ used in a Chinese community-based nutrition and health survey. A total of ninety-nine males and 104 females aged 31-80 years completed four three consecutive 24-h dietary recalls (24-HDR, served as a reference method, one three consecutive 24-HDR for each season) and two FFQ (FFQ1 and FFQ2) over a 1-year interval. The reproducibility of the FFQ was estimated with correlation coefficients, misclassification and weighted κ statistic. The validity was evaluated by comparing the data obtained from FFQ2 with the mean 24-HDR (m24-HDR). Compared with the m24-HDR, the FFQ tended to underestimate intake of most nutrients and food groups. For all nutrients and food groups, the Spearman's and intra-class correlation coefficients between FFQ1 and FFQ2 ranged from 0·66 to 0·88 and from 0·65 to 0·87, respectively. Most correlation coefficients decreased after adjusting for energy. More than 90% of the subjects were classified into the same or adjacent categories by both FFQ. For all nutrients and food groups, the crude, energy-adjusted and de-attenuated Spearman's correlation coefficients between FFQ2 and the m24-HDR ranged from 0·21 to 0·69, 0·19 to 0·58 and 0·25 to 0·71, respectively....Continue Reading

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Citations

Oct 28, 2019·Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation·Hui WuWeidong Wu
Aug 28, 2020·Journal of Atherosclerosis and Thrombosis·Min PengGelin Xu
Jun 3, 2018·International Journal of Environmental Research and Public Health·Meng-Chuan HuangChih-Cheng Hsu
Jan 13, 2021·The International Journal of Behavioral Nutrition and Physical Activity·Qi CuiYuhong Zhao
Aug 8, 2021·International Journal of Environmental Research and Public Health·Xiaona NaAiping Liu

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