Figure 1. Bland-Altman method of assessing agreement between the FFQ and 28-day DR for energy-adjusted dietary NEAC in (a) FRAP (y = 0.1831x − 1.2309; P < 0.01), (b) ORAC (y = 0.2209x − 1.6309; P < 0.01), and (c) TRAP (y = 0.2391x − 1.5024; P < 0.01). DR, dietary record; FFQ, food frequency questionnaire; LOA, limit of agreement.