巴西的咖啡因期望问卷（CaffEQ-BR）的翻译与验证。

Translation and Validation of the Caffeine Expectancy Questionnaire in Brazil (CaffEQ-BR).

机构信息

Department of Nutrition, School of Health Sciences, University of Brasilia (UnB), Campus Darcy Ribeiro, Asa Norte, Brasilia DF 70910-900, Brazil.

Department of Statistics, Central Institute of Sciences, University of Brasilia (UnB), Campus Darcy Ribeiro, Asa Norte, Brasilia DF 70910-900, Brazil.

出版信息

Nutrients. 2020 Jul 28;12(8):2248. doi: 10.3390/nu12082248.

DOI:10.3390/nu12082248

PMID:32731330

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7468745/

Abstract

Caffeine is the world's most commonly used stimulant of the central nervous system. Caffeine is present in coffee and other beverages such as tea, soft drinks, and cocoa-based foods. The caffeine expectancy questionnaire was developed to investigate the effects of caffeine expectations and thus contribute to knowledge about its usage and subjective effects (response expectancies). This study aimed to evaluate caffeine expectation psychometrically in a sample of the Brazilian population. The original version of the "Caffeine Expectancy Questionnaire (CaffEQ)" was translated and validated into Brazilian-Portuguese and adapted to Brazilian culture to be used in the Brazilian adult (19-59 y) population. After the translation and back-translation processes of the original CaffEQ questionnaire, the content and semantic validation were performed by a group of experts. The Brazilian-Portuguese version of the questionnaire consists of 47 items, in seven factors, which assess subjective perceptions about the effects of caffeine. Interobserver reproducibility and internal consistency of the questionnaire were tested with a convenience sample ( = 50) of Brazilian adult consumers of caffeine sources, who completed the Brazilian CaffEQ (CaffEQ-BR) on two occasions separated by 24 h. All of the 47 questions were adequate regarding reliability, clarity, and comprehension. Psychometric properties could be replicated consistently. Appropriate internal consistency and validation were confirmed by Cronbach's alpha (α) 0.948, and an intraclass correlation coefficient of 0.976 was observed. The CaffEQ-BR was applied using a web-based platform to a convenience sample of Brazilian adults from all 27 Brazilian states ( = 4202 participants), along with measures of sociodemographic and caffeine consumption data. Factor validity was verified by confirmatory factor analysis. The seven factors presented a good fit for Root Mean Square Error of Approximation-RMSEA = 0.0332 (95% CI: 0.0290-0.0375). By confirming the validity and reliability of CaffEQ-BR, a useful tool is now available to assess caffeine expectations in the Brazilian adult population.

摘要

咖啡因是世界上最常用的中枢神经系统兴奋剂。咖啡因存在于咖啡和其他饮料中，如茶、软饮料和可可制品。咖啡因期望问卷是为了研究咖啡因期望的影响而开发的，从而有助于了解其使用和主观影响（反应期望）。本研究旨在评估巴西人群样本中咖啡因期望的心理测量学。将原始的“咖啡因期望问卷（CaffEQ）”翻译成巴西葡萄牙语并进行验证，并适应巴西文化，以便在巴西成年（19-59 岁）人群中使用。在原始 CaffEQ 问卷的翻译和回译过程之后，由一组专家进行了内容和语义验证。该问卷的巴西葡萄牙语版本由 47 个项目组成，分为七个因子，评估了咖啡因的主观影响。通过便利样本（ = 50）对问卷的观察者间再现性和内部一致性进行了测试，这些样本是巴西咖啡因来源的成年消费者，他们在 24 小时内两次完成巴西 CaffEQ（CaffEQ-BR）。所有 47 个问题在可靠性、清晰度和理解方面都是合适的。心理测量特性可以一致地复制。通过 Cronbach 的 alpha（α）0.948 确认了适当的内部一致性，并且观察到 0.976 的组内相关系数。CaffEQ-BR 通过基于网络的平台应用于来自巴西 27 个州的便利样本中的巴西成年人（= 4202 名参与者），并测量了社会人口统计学和咖啡因消费数据。通过验证性因素分析验证了因子有效性。七个因子的 RMSEA 均方根误差拟合良好-RMSEA = 0.0332（95%CI：0.0290-0.0375）。通过确认 CaffEQ-BR 的有效性和可靠性，现在有了一个有用的工具来评估巴西成年人群的咖啡因期望。