Universidade Federal de Pelotas, Brasil.
Cad Saude Publica. 2010 Nov;26(11):2080-9. doi: 10.1590/s0102-311x2010001100009.
The study aims to describe and compare two methods of energy intake assessment and one measure of energy expenditure applied in adolescents from a birth cohort. In a sub-sample of the 1993 Pelotas (Brazil) birth cohort, followed up in 2006-7, information on intake was obtained through a food-frequency questionnaire (FFQ) and three 24-hour-recalls (24hR), while energy expenditure was assessed using an accelerometer. Bland & Altman plots were used in the analyses in order to compare the methods. The mean difference between FFQ and 24hR was 592 ± 929cal/day. Compared to energy expenditure, intake was overestimated when measured by FFQ (357 ± 968cal/day) and underestimated by 24hR (-278 ± 714cal/day). In spite of the great differences between energy intake obtained using the two methods, lower differences were observed when these methods were compared to expenditure.
本研究旨在描述和比较两种能量摄入评估方法和一种能量消耗测量方法在一个出生队列的青少年中的应用。在 1993 年巴西佩洛塔斯出生队列的一个子样本中，在 2006-2007 年进行了随访，通过食物频率问卷（FFQ）和三个 24 小时回忆（24hR）获取了摄入信息，同时使用加速度计评估了能量消耗。为了比较这些方法，在分析中使用了 Bland 和 Altman 图。FFQ 和 24hR 之间的平均差异为 592 ± 929cal/天。与能量消耗相比，FFQ 测量的摄入量被高估（357 ± 968cal/天），而 24hR 则被低估（-278 ± 714cal/天）。尽管两种方法得到的能量摄入存在很大差异，但与消耗相比，这些方法之间的差异较小。
