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Fig. 1 | Nutrition Journal

Fig. 1

From: Reproducibility and relative validity of a food frequency questionnaire for a diet-related study in a rural Chinese population

Fig. 1

Study design and schedule used in this study. A 76-items food frequency questionnaire (FFQ) was conducted with face-to-face interview at baseline (FFQ1) and 1 month later (FFQ2). Two three-day dietary recalls (DRs) were completed by participants between FFQ1 and FFQ2, with two-week apart. The reproducibility was tested by comparing the results from FFQ1 and FFQ2, and the validity was assessed by comparing results from FFQ1 and from DRs

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Nutrition Journal

ISSN: 1475-2891

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