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Title: A Short screener is valid for assessing mediterranean diet adherence among older spanish men and women
Authors: Schröder, Helmut
Fitó, Montserrat
Estruch, Ramón
Martínez-González, Miguel A.
Corella, Dolores
Salas-Salvadó, Jordi
Lamuela-Raventós, Rosa
Ros, Emilio
Salaverría, Itziar
Fiol, Miquel
Lapetra, José
Vinyoles, Ernest
Gómez-Gracia, Enrique
Lahoz, Carlos
Serra-Majem, Lluis 
Pintó, Xavier
Ruiz-Gutierrez, Valentina
Covas, María Isabel
Keywords: Food-Frequency Questionnaire
Physical-Activity Questionnaire
Cardiovascular Risk-Factors
Nutrient Intake
Quality Index, et al
Issue Date: 2011
Publisher: 0022-3166
Journal: Journal of Nutrition 
Abstract: 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 Prevencion con Dieta Mediterranea (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. J. Nutr. 141: 1140-1145, 2011.
ISSN: 0022-3166
DOI: 10.3945/jn.110.135566
Source: Journal of Nutrition[ISSN 0022-3166],v. 141, p. 1140-1145
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