Guenther Patricia M, Dodd Kevin W, Reedy Jill, Krebs-Smith Susan M
Center for Nutrition Policy and Promotion, US Department of Agriculture, 3101 Park Center Dr, Ste 1034, Alexandria, VA, USA.
J Am Diet Assoc. 2006 Sep;106(9):1371-9. doi: 10.1016/j.jada.2006.06.002.
To estimate the proportions of the population meeting recommendations for fruit and vegetable intake, we first estimated the usual intake distributions of total fruits and vegetables and then compared the results to the 5 A Day recommendation and to the recommendations for fruits and vegetables combined, found in the new US Department of Agriculture food guide, MyPyramid.
DESIGN/SUBJECTS: The primary dataset was created from one 24-hour recall from each of 8,070 respondents in the 1999-2000 National Health and Nutrition Examination Survey. Variances were estimated using one or two 24-hour recalls from 14,963 respondents in the 1994-1996 Continuing Survey of Food Intakes by Individuals.
The statistical method developed at Iowa State University was used for estimating distributions of usual intake of dietary components that are consumed daily. It was modified to allow the adjustment of heterogeneous within-person variances using an external estimate of heterogeneity.
In 1999-2000, only 40% of Americans ate an average of five or more (1/2)-cup servings of fruits and vegetables per day. The proportions of sex-age groups meeting the new US Department of Agriculture recommendations ranged from 0.7% of boys aged 14 to 18 years, whose combined recommendation is 5 cups, to 48% of children aged 2 to 3 years, whose combined recommendation is 2 cups.
Americans need to consume more fruits and vegetables, especially dark green and orange vegetables and legumes. Nutritionists must help consumers realize that, for everyone older than age 3 years, the new recommendations for fruit and vegetable intakes are greater than the familiar five servings a day.
为了估算达到水果和蔬菜摄入量建议标准的人群比例,我们首先估算了水果和蔬菜总摄入量的日常分布情况,然后将结果与“每日五蔬果”建议以及美国农业部新饮食指南“我的金字塔”中水果和蔬菜的综合建议进行比较。
设计/研究对象:主要数据集来自1999 - 2000年全国健康与营养检查调查中8070名受访者每人一次的24小时饮食回顾。方差是利用1994 - 1996年个人食物摄入量持续调查中14963名受访者一次或两次的24小时饮食回顾来估算的。
采用爱荷华州立大学开发的统计方法来估算每日食用的膳食成分的日常摄入量分布。该方法经过修改,以便能使用异质性的外部估计值来调整个体内部的异质方差。
在1999 - 2000年,只有40%的美国人平均每天食用五份或更多(每份半杯)的水果和蔬菜。达到美国农业部新建议标准的不同性别年龄组的比例从14至18岁男孩的0.7%(其综合建议量为5杯)到2至3岁儿童的48%(其综合建议量为2杯)不等。
美国人需要摄入更多的水果和蔬菜,尤其是深绿色和橙色蔬菜以及豆类。营养学家必须帮助消费者认识到,对于所有3岁以上的人来说,新的水果和蔬菜摄入量建议要高于大家熟悉的每日五份。