Benitez-Arciniega A.A.,Cardiovascular Risk and Nutrition Research Group CARIN ULEC |
Benitez-Arciniega A.A.,CIBER ISCIII |
Benitez-Arciniega A.A.,Program of Research in Inflammatory and Cardiovascular Disorders |
Mendez M.A.,Center for Research in Environmental Epidemiology |
And 15 more authors.
Public Health Nutrition | Year: 2011
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. © 2011 The Authors.
Schroder H.,Program of Research in Inflammatory and Cardiovascular Disorders RICAD |
Schroder H.,Institute Salud Carlos III |
Benitez Arciniega A.,Program of Research in Inflammatory and Cardiovascular Disorders RICAD |
Benitez Arciniega A.,Institute Salud Carlos III |
And 4 more authors.
Public Health Nutrition | Year: 2012
Objective: An urgent need in dietary assessment is the development of short tools that provide valid assessments of dietary quality for use in time-limited Settings. The present study assessed concurrent and construct validity of the short Diet Quality Screener (sDQS) and brief Mediterranean Diet Screener (bMDSC) questionnaires. Design: Relative validity was measured by comparing three dietary quality indices - the Diet Quality Index (DQI), the modified Mediterranean Diet Score (mMDS) and the Antioxidant Score (ANTOX-S) - derived from the two questionnaires with those from multiple 24 h recalls over 12 months. Construct validity was demonstrated by correlations between average nutrient intake recorded on multiple 24 h recalls and the DQI, mMDS and ANTOX-S derived by the short screeners. Setting: Both short questionnaires were administered to 102 participants recruited from a population-based survey in Spain. Results: DQI, mMDS and ANTOX-S correlated (P < 0A001) with the corresponding 24 h recall indices (r = 0·61, 0·40 and 0·45, respectively). Limits of agreement lay between 96 and 126 %, 59 and 144 % and 61 and 118 % for the DQI, ANTOX-S and mMDS, respectively. Dietary intakes of fibre, vitamin C, vitamin E, Mg and K reported on the 24 h recalls were positively associated (P < 0·04) with the DQI, mMDS and ANTOX-S indices. Conclusions: The sDQS and bMDSC provide reasonable approximations to food-based dietary indices and accurately situate Subjects within the indices constructed for the present validation study. © 2011 The Authors.