Do nutrition knowledge and beliefs modify the association of socio-economic factors and diet quality among US adults?
Do nutrition knowledge and beliefs modify the association of socio-economic factors and diet quality among US adults?
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DOI：
10.1016/j.ypmed.2007.06.016
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发表时间：
2008-02-01
影响因子：
5.1
通讯作者：
Wang, Youfa
中科院分区：
文献类型：
--
作者：
Beydoun, May A.;Wang, Youfa
目标.我们研究了社会经济地位（SES）因素对美国成年人饮食质量和水果蔬菜摄入量的影响，以及营养知识和信念的影响。我们使用了1994-1996年收集的4356名20-65岁美国成年人的全国横断面数据（个人食物摄入量持续调查）。考虑的社会经济因素是教育和贫困收入比率。采用主成分分析法对11个问题的回答进行了营养知识和信念的测量。我们通过健康饮食指数和替代地中海饮食评分考虑了与美国农业部推荐的水果和蔬菜摄入量以及整体饮食质量相关的三个二元和两个连续结果。多变量分析表明，更好的SES独立地提高了足够的水果和蔬菜摄入量和整体饮食质量的可能性。在某些情况下，营养知识和信念起到了调节作用。特别是，在营养知识和信念最低的三分位数中，教育与饮食质量没有关联，而在最高的三分位数中，这种关联一直更强（教育x营养知识和信念交互作用项P
Objectives. We examined effects of socio-economic status (SES) factors on diet quality and fruits and vegetables intake among US adults and effect modification by nutrition knowledge and beliefs.Methods. We used national cross-sectional data (Continuing Survey of Food Intake by Individuals) on 4356 US adults, aged 20-65 years, collected in 1994-1996. Socio-economic factors considered were education and poverty income ratio. Nutrition knowledge and belief score was measured by principal components analysis of 11 question responses. We considered three binary and two continuous outcomes related to United States Department of Agriculture recommended intake of fruits and vegetables and overall diet quality through Healthy Eating Index and alternate Mediterranean Diet Score.Results. Multivariate analyses indicated that better SES independently improved likelihood of adequate fruits and vegetables intake and overall diet quality. In several cases, nutrition knowledge and beliefs acted as an effect modifier. In particular, education showed no association with diet quality among subjects in the lowest nutrition knowledge and belief tertile, while the association was consistently stronger in the highest tertile (Education x Nutrition knowledge and beliefs interaction term P