Validity and reliability of a semi-quantitative food frequency questionnaire in groups at high risk for cardiovascular diseases

Ni Yan, Nan Li, Wanlu Liu, Xiaoxia Li, Xiuying Liu, Pengju Zhang, Can Liu, Juan Li, Jiangwei Qiu, Yuhong Zhang & Yi Zhao
Abstract Background Diet is a modifiable risk factor for cardiovascular diseases (CVD), but there is still a lack of tools to assess dietary intakes of this high-risk population in Ningxia, China. Objective We aim to evaluate the validity and reliability of the semi-quantitative food frequency questionnaire (SFFQ) in the groups in Ningxia using a 24-hour dietary recall method. Method Two hundred five participants were included in the analysis. The two FFQs were 6 months apart,...
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