Estimation of sodium intake by urinary excretion and dietary records in children and adolescents from Porto Alegre, Brazil: a comparision of two methods.
Estimation of sodium intake by urinary excretion and dietary records in children and adolescents from Porto Alegre, Brazil: a comparision of two methods.
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DOI：
10.1016/s0271-5317(03)00157-x
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发表时间：
2003-11-01
影响因子：
4.5
通讯作者：
Rosa, AA
中科院分区：
文献类型：
--
作者：
Micheli, ET;Rosa, AA
在巴西南部的阿雷格里港进行了一项以人群为基础的横断面研究，以评估24小时膳食记录在评估钠摄入量中的使用。研究对象为188名6-17岁的儿童和青少年。所有受试者都收集了夜间尿液，其中16%的受试者收集了24小时尿液。每天的钠摄入量在8.5到10克之间。24小时尿钠的平均排泄量是饮食记录计算的平均摄入量的83%。两种方法测定尿钠排泄量的皮尔逊相关系数r=0.71(P<；0.001)。然而，Bland-Altman分析显示，95%的一致性界限差异很大，从而为两种方法之间的巨大差异提供了证据。Bland-Altman分析可以被认为是对使用相关系数来评估两种方法之间的一致性的重要改进。通过饮食记录估计的钠摄入量与尿液采集相比是不准确的(r=-0.41；P<；0.05(24小时)和r=0.09；P=0.175(过夜)。(C)2003 Elsevier Inc.保留所有权利。
Cross-sectional population-based study conducted in the city of Porto Alegre, south Brazil, to evaluate the use of 24-hour dietary records in the assessment of sodium intake. Subjects were 188 children and adolescents aged 6 to 17 years. Overnight urine was collected for all subjects, and 24-hour urine was collected for 16% of the subjects. Daily sodium intake ranged from 8.5 to 10 g. Mean amount of sodium excreted in 24-hour urine was 83% of the mean intake calculated by dietary records. The Pearson correlation coefficient between the two methods of assessment of urinary excretion of sodium was r = 0.71 (P < 0.001). However, Bland-Altman analysis revealed that the 95% limits of agreement varied widely, thus providing evidence of the large difference between the two methods. Bland-Altman analysis could be considered an important improvement over the use of correlation coefficient to evaluate the agreement between two methods. Estimation of sodium intake by means of dietary records was inaccurate when compared with urine collections (r = -0.41; P < 0.05 (24h) and r = 0.09; P = 0.175 (overnight). (C) 2003 Elsevier Inc. All rights reserved.