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

J Nutr. 2011 Jun;141(6):1140-5. doi: 10.3945/jn.110.135566. Epub 2011 Apr 20.

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 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.

Publication types

  • Multicenter Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Aged
  • Aged, 80 and over
  • Blood Glucose / metabolism
  • Coronary Artery Disease / prevention & control
  • Diet Surveys
  • Diet, Mediterranean*
  • Female
  • Humans
  • Linear Models
  • Lipids / blood
  • Male
  • Middle Aged
  • Patient Compliance*
  • Preventive Medicine
  • Risk Factors
  • Spain
  • Surveys and Questionnaires
  • Waist Circumference

Substances

  • Blood Glucose
  • Lipids

Associated data

  • ISRCTN/ISRCTN35739639