Postgraduate Programme in Collective Health, Federal University of Maranhão, São Luís 65020-070, Brazil.
Higher School of Health Sciences-Bachelor of Nursing, State University of Amazonas, Nurse at Brazilian Hospital Services Company (EBSERH), Manaus 69850-000, Brazil.
Nutrients. 2023 Oct 24;15(21):4511. doi: 10.3390/nu15214511.
Traditional methods for assessing individual energy consumption often involve lengthy and intricate procedures. This study aims to introduce an Energy Consumption Estimation Scale, utilizing Item Response Theory (IRT) for adolescents aged 18-19 years.
This psychometric investigation applies IRT to 93 items extracted from a validated food frequency questionnaire. The study encompasses a representative sample of 2515 adolescents from the São Luís birth cohort in Brazil. The latent trait, energy intake, is derived using IRT and subsequently validated through hierarchical multiple linear regression modeling. Significance was established at < 0.05.
A Samejima's model was successfully fitted (CFI and TLI > 0.9 and RMSEA < 0.08), effectively capturing variations across all energy consumption levels. Factors associated with the latent trait demonstrate consistent behavioral patterns. Adolescents with higher energy intake exhibited increased consumption of dairy products, artificially sweetened beverages, and seasonal fruits and vegetables.
The proposed Energy Consumption Estimation Scale demonstrates a reliable measurement of energy intake and serves as a practical and concise alternative for assessing energy consumption among adolescents. These findings suggest the potential for adapting similar models for different age groups and incorporating diverse food items based on the obtained results.
传统的个体能量消耗评估方法通常涉及冗长而复杂的程序。本研究旨在为 18-19 岁青少年引入一种利用项目反应理论（IRT）的能量消耗估算量表。
本心理计量学研究应用 IRT 分析了从巴西圣路易斯出生队列中一个经过验证的食物频率问卷中提取的 93 个项目。研究涵盖了该队列中 2515 名青少年的代表性样本。使用 IRT 得出潜在特质（能量摄入），并通过分层多重线性回归模型进行验证。显著性水平设定为 < 0.05。
成功拟合了 Samejima 模型（CFI 和 TLI > 0.9，RMSEA < 0.08），有效捕捉了所有能量消耗水平的变化。与潜在特质相关的因素表现出一致的行为模式。能量摄入较高的青少年增加了乳制品、人工加糖饮料和季节性水果与蔬菜的消费。
所提出的能量消耗估算量表可可靠地测量能量摄入，是评估青少年能量消耗的实用且简明的替代方法。这些发现表明，根据获得的结果，有可能为不同年龄组和不同食物项目改编类似的模型。
