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Fig. 1 | BMC Nutrition

Fig. 1

From: Evaluation of the relative validity of a Web-based food frequency questionnaire used to assess Soy Isoflavones and nutrient intake in adolescents

Fig. 1

Bland-Altman graphs for total isoflavones, daidzein, genistein, and glycitein intake of the group that reported intake of soy-containing foods (n = 55). The graphs plot the difference between the energy-adjusted values for the two methods (web-based food frequency questionnaire [webFFQ] and food record with digital photograph [FR]) against the average of the two methods. Shaded part of the graph indicates the limits of agreement

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