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Fig. 2 | BMC Nutrition

Fig. 2

From: Reproducibility and relative validity of a newly developed web-based food-frequency questionnaire for assessment of preconception diet

Fig. 2

Bland-Altman plot for measuring daily energy intake. Bland-Altman plot between the food frequency questionnaire (FFQ) and the weighed food record (WFR) methods for measuring daily energy intake. The solid line represents the mean difference between the two methods, and the dashed lines represent the limits of agreement corresponding to ±2 (SD)

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BMC Nutrition

ISSN: 2055-0928

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