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A Short Screener Is Valid for Assessing Mediterranean Diet Adherence among Older Spanish Men and Women

2011; Elsevier BV; Volume: 141; Issue: 6 Linguagem: Inglês

10.3945/jn.110.135566

1541-6100

Helmut Schröder, Montserrat Fitó, Ramón Estruch, Miguel Ángel Martínez‐González, Dolores Corella, Jordi Salas‐Salvadó, Rosa M. Lamuela‐Raventós, Emilio Ros, Itziar Salaverria‐Lete, Miquel Fiol, José Lapetra, Ernest Vinyoles, Enrique Gómez‐Gracia, Carlos Lahoz, Lluís Serra‐Majem, Xavier Pintó, Valentina Ruiz‐Gutiérrez, María-Isabel Covas,

Obesity, Physical Activity, Diet

Ensuring the accuracy of dietary assessment instruments is paramount for interpreting diet-disease relationships. The present study assessed the relative and construct validity of the 14-point Mediterranean Diet Adherence Screener (MEDAS) used in the Prevención con Dieta Mediterránea (PREDIMED) study, a primary prevention nutrition-intervention trial. A validated FFQ and the MEDAS were administered to 7146 participants of the PREDIMED study. The MEDAS-derived PREDIMED score correlated significantly with the corresponding FFQ PREDIMED score (r = 0.52; intraclass correlation coefficient = 0.51) and in the anticipated directions with the dietary intakes reported on the FFQ. Using Bland Altman's analysis, the average MEDAS Mediterranean diet score estimate was 105% of the FFQ PREDIMED score estimate. Limits of agreement ranged between 57 and 153%. Multiple linear regression analyses revealed that a higher PREDIMED score related directly (P < 0.001) to HDL-cholesterol (HDL-C) and inversely (P < 0.038) to BMI, waist circumference, TG, the TG:HDL-C ratio, fasting glucose, and the cholesterol:HDL-C ratio. The 10-y estimated coronary artery disease risk decreased as the PREDIMED score increased (P < 0.001). The MEDAS is a valid instrument for rapid estimation of adherence to the Mediterranean diet and may be useful in clinical practice.