| Concurrent and construct validity of Mediterranean diet scores as assessed by an FFQ. | |
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MedLine Citation:
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PMID: 21740628 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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OBJECTIVE: The aim of the present study was to assess the concurrent and construct validity of two diet-quality indices, a modified Mediterranean diet score (mMDS) and a Mediterranean-like diet score (MLDS) additionally incorporating unhealthy food choices, as determined by an FFQ. DESIGN: A validation study assessing FFQ intake estimates compared with ten or more unannounced 24 h recalls. Pearson's correlation coefficients, intraclass correlation coefficients (ICC), Bland-Altman plots and the limits of agreement method were used to assess the between-method agreement of scores. Construct validity was shown using associations between nutrient intakes derived from multiple 24 h recalls and the mMDS and MLDS derived from the FFQ. SETTING: Gerona, Spain. SUBJECTS: A total of 107 consecutively selected participants from a population-based cross-sectional survey. RESULTS: Pearson's correlations for the energy-adjusted mMDS and MLDS compared with multiple recalls were 0·48 and 0·62, respectively. The average FFQ energy-adjusted mMDS and MLDS were 102 % and 98 % of the recall-based mMDS and MLDS estimates, respectively. The FFQ under- and overestimated dietary recall estimates of the energy-adjusted MLDS by 28 % and 25 %, respectively, with slightly wider boundaries for the mMDS (31 % and 34 %). The ICC, which assesses absolute agreement, was similar to Pearson's correlations (mMDS = 0·48 and MLDS = 0·61). The mean differences between methods were similar across the range of average ratings for both scores, indicating the absence of bias. The FFQ-derived mMDS and MLDS correlated in the anticipated directions with intakes of eleven (73·3 %) and thirteen of fifteen nutrients (86·7 %), respectively. CONCLUSIONS: The FFQ provides valid estimates of diet quality as assessed by the mMDS and MLDS. |
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Authors:
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Alejandra A Benítez-Arciniega; Michelle A Mendez; Jose M Baena-Díez; Maria-Asunción Rovira Martori; Cristina Soler; Jaume Marrugat; Maria-Isabel Covas; Hector Sanz; Alba Llopis; Helmut Schröder |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-7-11 |
Journal Detail:
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Title: Public health nutrition Volume: - ISSN: 1475-2727 ISO Abbreviation: - Publication Date: 2011 Jul |
Date Detail:
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Created Date: 2011-7-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9808463 Medline TA: Public Health Nutr Country: - |
Other Details:
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Languages: ENG Pagination: 1-7 Citation Subset: - |
Affiliation:
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1Cardiovascular Risk and Nutrition Research Group (CARIN-ULEC), IMIM-Hospital del Mar Barcelona, Biomedical Research Park (Parc de Recerca Biomèdica de Barcelona - PRBB), c/Doctor Aiguader 88, 08003 Barcelona, Spain. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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