Toeller M, Buyken A, Heitkamp G, Milne R, Klischan A, Gries F A
Diabetes Research Institute, Heinrich-Heine-University, Düsseldorf, Germany.
Eur J Clin Nutr. 1997 Feb;51(2):74-80. doi: 10.1038/sj.ejcn.1600364.
Repeatability of a dietary method is important in determining the quality of nutritional data. It should be assessed in the population of interest. This study evaluated the repeatability of nutritional data from standardized three-day dietary records, from the clinic-based, cross-sectional multi-centre EURODIAB IDDM Complications Study.
15% of the total EURODIAB cohort was randomly selected to test the repeatability of nutritional intake data. Two three-day records, completed three weeks apart, were available for 216 diabetic patients (7.5%) representative of the total cohort. All records were analysed centrally, for intakes of protein (animal and vegetable), fat (saturated fat and cholesterol), carbohydrate, fibre, alcohol and energy. Repeatability was measured comparing mean intakes, determining the proportion of patients classified into the same/opposite quartile by the two three-day records and assessing mean differences with standard deviations (s.d.d).
There were no significant differences in mean energy and nutrient intakes between the first and second records. Classification of individuals into the opposite quartile occurred only in 0-4% of patients and overall about 50% (range 44-74%) of the subjects were classified into the same quartiles of intakes. Only small mean differences were found for energy intake (-156 (1633) kJ; 95% confidence limits -375, 63 kJ) and nutrients with s.d.ds comparable to intra-individual variations in the general population. The differences in energy intake were randomly distributed over the range of intakes.
The present study demonstrates that standardized three day dietary records show a high degree of repeatability within a short period of time in a sample of European IDDM patients. The good repeatability strengthens the conclusions drawn from the nutritional data in the EURODIAB IDDM Complications Study.
饮食方法的可重复性对于确定营养数据的质量很重要。应在目标人群中进行评估。本研究评估了基于诊所的横断面多中心欧洲糖尿病（EURODIAB）IDDM并发症研究中标准化三日饮食记录的营养数据的可重复性。
从欧洲糖尿病队列的总体中随机抽取15%来测试营养摄入数据的可重复性。216名糖尿病患者（占总队列的7.5%）提供了两份相隔三周完成的三日记录。所有记录均集中分析蛋白质（动物蛋白和植物蛋白）、脂肪（饱和脂肪和胆固醇）、碳水化合物、纤维、酒精和能量的摄入量。通过比较平均摄入量、确定两份三日记录将患者分类到相同/相反四分位数的比例以及评估平均差异与标准差（s.d.d）来测量可重复性。
第一次和第二次记录之间的平均能量和营养素摄入量没有显著差异。个体被分类到相反四分位数的情况仅发生在0 - 4%的患者中，总体上约50%（范围44 - 74%）的受试者被分类到相同的摄入量四分位数中。能量摄入量的平均差异很小（-156（1633）kJ；95%置信区间-375，63 kJ），营养素的标准差与一般人群个体内差异相当。能量摄入量的差异在摄入量范围内随机分布。
本研究表明，标准化的三日饮食记录在欧洲IDDM患者样本中短期内显示出高度的可重复性。良好的可重复性加强了从欧洲糖尿病IDDM并发症研究中的营养数据得出的结论。
