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首页> 外文期刊>The British Journal of Nutrition >Reproducibility and validity of the Mediterranean Diet Quality Index (KIDMED Index) in a sample of Portuguese adolescents
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Reproducibility and validity of the Mediterranean Diet Quality Index (KIDMED Index) in a sample of Portuguese adolescents

机译：地中海饮食质量指数（KIDMED指数）在葡萄牙青少年样本中的可重复性和有效性

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Abstract The Mediterranean Diet Quality Index (KIDMED Index) is frequently used to evaluate adherence to the Mediterranean Dietary Pattern among children and adolescents, through sixteen questions with the associated total score ranging from −4 to 12. However, in the authors’ best knowledge, the psychometric properties of this index had not yet been investigated in Portugal. Thus, the main purpose of the present study was to investigate the reproducibility and the validity of the KIDMED Index in a sample of 185 Portuguese adolescents. The reproducibility was tested by comparing the application of the KIDMED Index at two different times (2-week interval), using McNemar test and Kappa statistics. There was moderate agreement (κw = 0·591; 95 CI 0·485, 0·696) and no significant change (P-value = 0·201) in the KIDMED Index classification, between the two applications. The validity was explored by comparing the results obtained by the KIDMED Index and by the average of 3-d Dietary-Record (DR), using Spearman’s correlation coefficient and Kappa statistics. There was weak correlation (ρ = 0·317; P-value < 0·001) and slight agreement (κw = 0·167; 95 CI 0·071, 0·262) between the KIDMED Index classification and the 3-d DR-derived KIDMED score, and moderate correlation (ρ = 0·423; P-value < 0·001) and fair agreement (κw = 0·344; 95 CI 0·202, 0·486) between the terciles of the KIDMED Index and the Mediterranean Adequacy Index scores. The results suggested an acceptable reproducibility and validity of the Portuguese version of the KIDMED Index, in alignment with the few studies investigating psychometric properties of this index in other countries.
机译：摘要 地中海饮食质量指数（KIDMED指数）经常用于评估儿童和青少年对地中海饮食模式的依从性，通过16个问题，相关总分范围为-4至12。然而，据作者所知，该指数的心理测量特性尚未在葡萄牙进行研究。因此，本研究的主要目的是调查 KIDMED 指数在 185 名葡萄牙青少年样本中的可重复性和有效性。通过使用McNemar检验和Kappa统计，比较KIDMED指数在两个不同时间（间隔2周）的应用来测试重现性。两种应用之间的KIDMED指数分类具有中等一致性（κw = 0·591;95% CI 0·485,0·696），并且没有显著变化（P值= 0·201）。通过使用 Spearman 相关系数和 Kappa 统计量，比较 KIDMED 指数和 3-d 饮食记录 （DR） 平均值获得的结果来探索有效性。相关性较弱（ρ = 0·317;P 值 < 0·001） 和 KIDMED 指数分类与 3-d DR 衍生的 KIDMED 评分之间的轻微一致性 （κw = 0·167;95% CI 0·071， 0·262），并且具有中等相关性 （ρ = 0·423;P值<0.001）和公平一致性（κw = 0.344;95%CI 0.202,0.486）在KIDMED指数和地中海充足指数得分的三级之间。结果表明，葡萄牙版KIDMED指数的可重复性和有效性是可以接受的，这与其他国家调查该指数心理测量特性的少数研究一致。

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