The dietary variety score: Assessing diet quality in healthy young and older adults
The dietary variety score: Assessing diet quality in healthy young and older adults
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DOI：
10.1016/s0002-8223(97)00070-9
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发表时间：
1997-03-01
影响因子：
--
通讯作者：
Rolls, BJ
中科院分区：
文献类型：
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作者：
Drewnowski, A;Henderson, SA;Rolls, BJ
目的建立一种新的膳食多样性评分(DVS)，并将其与其他饮食质量指标联系起来，包括改进的膳食质量指数(DQI)。研究对象为24名健康青年(20~30岁)和24名健康老年人(60~75岁)，其中男性24名，女性24名。他们的膳食摄入量评估是基于一次24小时的食物召回访谈和连续14天的食物记录。设计和测量能量和营养素的摄入量使用营养学家IV软件进行估计。DVS是基于在15天内消费的不同食物的累积数量。DQI是一种基于对美国主要饮食建议的符合性的5分制。每天来自脂肪的能量不超过30%，来自饱和脂肪的能量不超过10%，来自碳水化合物的能量超过50%，以及每天胆固醇和钠含量低于300毫克的饮食获得满分。分析测量包括方差分析、相关分析和X(2)检验。结果年龄较大的受试者比年轻受试者摄入更多样化的饮食。较高的DVS值与维生素C摄入量呈正相关，与盐、糖和饱和脂肪的摄入量呈负相关。然而，在受试者样本中，高DVS与DQI的高分并不相关。讨论/结论很少有研究涉及到多少：不同的食物构成了不同的饮食。目前的分类方案提供了一种在个人或群体水平上评估饮食变化的新方法。饮食多样性的衡量可能代表饮食质量的另一个方面，它们与选定的健康结果的关系应进一步检查。
Objective To develop a new dietary variety score (DVS) and link it to other measures of diet quality, including a modified diet quality index (DQI).Subjects The subjects were 24 healthy young (ages 20 to 30 years) and 24 healthy older (ages 60 to 75 years) adults, including 24 men and 24 women. Their dietary intake assessments were based on one 24-hour food recall interview and 14 consecutive days of food records.Design and measures Energy and nutrient intakes were estimated using Nutritionist IV software. DVS was based on the cumulative number of different foods consumed over the 15-day period. DQI was a 5-point scale based on conformity with the key US dietary recommendations. Full score nas awarded for diets deriving 30% or less of energy from fat, 10% or less of energy from saturated fat, more than 50% of energy from carbohydrate, and containing less than 300 mg cholesterol and 2, 400 mg sodium per day. Analytic measures included analyses of variance, correlation analyses, and chi(2) tests.Results Older subjects consumed more varied diets than did young subjects. Higher DVS values were linked positively to vitamin C intakes and negatively to the consumption of salt, sugar, and saturated fat. However, a high DVS was not linked to a high score on the DQI in this subject sample.Discussion/conclusions Few studies have addressed the issue of how many: different Foods constitute a varied diet. The present classification scheme offers a new way of assessing dietary variety at the individual or group level. Measures of dietary variety may represent an additional facet of diet quality and their relationship to selected health outcomes should be examined further.