A meta-analysis of the reproducibility of food frequency questionnaires in nutritional epidemiological studies

• Main Authors: Qi Cui (Author), Yang Xia (Author), Qijun Wu (Author), Qing Chang (Author), Kaijun Niu (Author), Yuhong Zhao (Author)
• Format: Book
• Published: BMC, 2021-01-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Abstract Background Reproducibility of FFQs measures the consistency of the same subject at different time points. We performed a meta-analysis to explore the reproducibility of FFQs and factors related to reproducibility of FFQs. Methods and findings A systematic literature review was performed bef...