Montgomery Colette, Reilly John J, Jackson Diane M, Kelly Louise A, Slater Christine, Paton James Y, Grant Stan
University of Glasgow Division of Developmental Medicine, Yorkhill Hospital, Glasgow G3 8SJ, UK.
Br J Nutr. 2005 May;93(5):671-6. doi: 10.1079/bjn20051405.
Accurate measurement of energy intake (EI) is essential in studies of energy balance in all age groups. Reported values for EI can be validated against total energy expenditure (TEE) measured using doubly labelled water (DLW). Our previous work has indicated that the use of the standardized 24 h multiple pass recall (24 h MPR) method produces slight overestimates of EI in pre-school children which are inaccurate at individual level but acceptable at group level. To extend this work, the current study validated EI by 24 h MPR against TEE by DLW in sixty-three (thirty-two boys) school-aged children (median age 6 years). In both boys and girls, reported EI was higher than TEE, although this difference was only significant in the girls (median difference 420 kJ/d, P=0.05). On analysis of agreement between TEE and EI, the group bias was an overestimation of EI by 250 kJ/d with wide limits of agreement (-2880, 2380 kJ/d). EI was over-reported relative to TEE by 7 % and 0.9 % in girls and boys, respectively. The bias in the current study was lower than in our previous study of pre-school children, suggesting that estimates of EI become less inaccurate as children age. However, the current study suggests that the 24 h MPR is inaccurate at the individual level.
准确测量能量摄入（EI）在所有年龄组的能量平衡研究中至关重要。报告的EI值可对照使用双标水（DLW）测量的总能量消耗（TEE）进行验证。我们之前的研究表明，使用标准化的24小时多次通过回忆法（24 h MPR）会使学龄前儿童的EI略有高估，这种高估在个体水平上不准确，但在群体水平上是可以接受的。为了拓展这项工作，本研究通过24 h MPR对63名（32名男孩）学龄儿童（中位年龄6岁）的EI与通过DLW测量的TEE进行了验证。在男孩和女孩中，报告的EI均高于TEE，尽管这种差异仅在女孩中显著（中位差异420 kJ/d，P = 0.05）。在分析TEE与EI之间的一致性时，群体偏差是EI高估250 kJ/d，一致性界限较宽（-2880，2380 kJ/d）。女孩和男孩中EI相对于TEE分别多报了7%和0.9%。本研究中的偏差低于我们之前对学龄前儿童的研究，这表明随着儿童年龄增长，EI的估计变得不那么不准确。然而，本研究表明24 h MPR在个体水平上不准确。
