Estimating under-reporting of energy intake in dietary surveys using an individualised method
Estimating under-reporting of energy intake in dietary surveys using an individualised method
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DOI：
10.1017/s0007114507433086
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发表时间：
2007-06-01
影响因子：
3.6
通讯作者：
Jebb, Susan A.
中科院分区：
文献类型：
--
作者：
Rennie, Kirsten L.;Coward, Andy;Jebb, Susan A.
通过自我报告的饮食方法少报能量摄入量(EI)是有充分证据的，但在基于人群的研究中用于估计UR的方法通常假定为久坐不动的生活方式。我们比较了使用个人能源需求估计的UR与基于最低能源需求的人口截止值。在全国饮食与营养调查中，估计了1,551名19-年龄段的成年人的UR。同时完成体力活动日记和7d体重饮食记录。根据膳食记录计算日均EL(kJ/d)。报告的体力活动被用来分配每个受试者的活动水平，然后根据发表的公式计算估计的能量需求(EER)。根据EER和EL的日变化进行调整后，UR被计算为EER-EI，也是通过种群方法计算的。按个人方法计算，用电量约占男性能源需求的27%，女性约占29%，其中75%的男性和77%的女性被归类为记者以下人员；按人口统计方法，分别有80%和88%的人被归类为记者以下人员。剔除那些在饮食记录中报告自己的饮食受到节食或疾病影响的受试者，UR是两性能量需求的25%。超重和肥胖的男性和女性的尿酸水平高于他们的精瘦同龄人(P<；0-001)。在膳食调查中必须考虑EL的UR。EER方法允许对UR进行量化，并考虑个人的活动水平。在饮食记录过程中，体力活动的测量和确定进食不足的问题可能有助于评估UR的长期趋势。
Under-reporting (UR) of energy intake (EI) by self-reported dietary methods is well-documented but the methods used to estimate UR in population-based studies commonly assume a sedentary lifestyle. We compared estimated UR using individualised estimates of energy requirements with a population cut-off based on minimum energy needs. UR was estimated for 1551 adults aged 19-64 years enrolled in the National Diet and Nutrition Survey. Physical activity diaries and 7 d weighed dietary records were completed concurrently. Mean daily El (kJ/d) was calculated from the dietary records. Reported physical activity was used to assign each subject's activity level, and then to calculate estimated energy requirements (EER) from published equations. UR was calculated both as EER - EI with an adjustment for daily EER and El variation, and also by a population method. By the individual method UR was approximately 27 % of energy needs in men and 29 % in women, with 75 % of men and 77 % of women classified as under-reporters; by the population method 80 and 88 % were classified as under-reporters respectively. When subjects who reported their eating being affected by dieting or illness during dietary recording were excluded, UR was 25 % of energy needs in both sexes. UR was higher in overweight and obese men and women compared with their lean counterparts (P < 0-001). UR of El must be considered in dietary surveys. The EER method allows UR to be quantified and takes into account an individual's activity level. Measures of physical activity and questions to identify under-eating during dietary recording may help to evaluate secular trends in UR.