Comparison and evaluation of the reliability of indexes of adherence to the Mediterranean diet

Public Health Nutrition

Josep Lluis Carrasco¹  Anna Puchal¹  Josep Puig¹  Raimon Milà-Villarroel¹  Anna Bach-Faig¹  Lluis Serra-Majem¹  Andreu Farran¹ 

关键词: Mediterranean diet indexes;    Mediterranean diet scores;    Factor analysis;    Mediterranean diet;   

DOI  :  10.1017/S1368980011002606

学科分类：卫生学

来源: Cambridge University Press

【 摘 要 】

ObjectiveTo compare and evaluate the reliability of several indexes of adherence to the Mediterranean diet.DesignThe ten indexes included in the analysis were: Mediterranean Diet Score (MDS), Mediterranean Score (MS), Dietary Score (DS), Mediterranean-Dietary Quality Index (Med-DQI), Mediterranean Dietary Pattern adherence index (MDP), Mediterranean Adequacy Index (MAI), Mediterranean Style Dietary Pattern Score (MSDPS), Mediterranean food pattern PREDIMED Study (MeDiet-PREDIMED), relative Mediterranean diet (rMED) and Cardioprotective Mediterranean diet index. Factor analysis using the correlations between indexes was applied. The correlation with factors and the reliability coefficient were calculated.SettingA total of 324 healthy undergraduates at the University of Barcelona, Spain, were surveyed.ResultsThe highest correlations were observed between MDP adherence index and MAI (0·82); MAI and MSDPS (0·80); and MDS and rMED (0·77). Factor analysis showed a hidden common factor that explained over 70 % of the variability (71·03 %). This factor is understood as ‘adherence to the Mediterranean diet’. The indexes that showed the highest correlation with this factor were Med-DQI (0·85), MDS (0·84), rMED (0·80) and MAI (0·80). These indexes showed acceptable performance in measuring the adherence to the Mediterranean diet. The components that correlated strongly with this factor were monounsaturated-to-saturated fatty acid ratio (MS ratio), fruit and vegetables. Furthermore, a second common factor was found explaining 18 % of the variability. This second factor is highly positive related to dairy products and lean meat, and negative related to MS ratio.ConclusionsThe indexes showed satisfactory performance in assessing adherence to the Mediterranean diet. However, in order to improve the reliability and concordance between the indexes, further studies are required to select the components, the number of components, and the scoring criteria of the indexes to improve their internal consistency.

【 授权许可】

Unknown