Flinders Centre for Innovation in Cancer, School of Medicine, Flinders University, Adelaide 5001, SA, Australia.
Appetite. 2013 Nov;70:112-8. doi: 10.1016/j.appet.2013.07.001. Epub 2013 Jul 12.
Measures of beliefs and attitudes towards food need to be valid, and easy to use and interpret. The present study aimed to establish the validity and reliability of a short-form of the Food-Life Questionnaire (FLQ). Participants (247 females; 118 males), recruited in South Australia, completed a questionnaire in 2012 incorporating the original FLQ, a revised short form (FLQ-SF), and measures of food choice and consumption. Validity (construct, criterion-related, and incremental) and reliability (internal consistency and short-form) were assessed. Factor analysis established that short-form items loaded onto five factors consistent with the original FLQ and explained 60% of variance. Moderate correlations were observed between the FLQ-SF and a measure of food choices (r=.32-.64), and the FLQ-SF predicted unhealthy food consumption over and above the full FLQ demonstrating criterion-related and incremental validity respectively. The final FLQ-SF included 21 items and had a Cronbach's alpha of .75. Short-form reliability was established with correlations between corresponding subscales of the FLQ and FLQ-SF ranging from r=.64-.84. Overall, the FLQ-SF is brief, psychometrically robust, and easy to administer. It should be considered an important tool in research informing public policies and programs that aim to improve food choices.
衡量人们对食物的信念和态度的方法需要具有有效性、易用性和可解释性。本研究旨在建立食物生活问卷（FLQ）简短版本的有效性和可靠性。参与者（247 名女性；118 名男性）于 2012 年在南澳大利亚州招募，完成了一份问卷，其中包含原始的 FLQ、修订后的简短形式（FLQ-SF）以及食物选择和消费的测量。评估了有效性（结构、效标关联和增量）和可靠性（内部一致性和简短形式）。因子分析表明，简短形式的项目与原始 FLQ 的五个因素一致，解释了 60%的方差。FLQ-SF 与食物选择的测量之间观察到中等相关性（r=.32-.64），并且 FLQ-SF 在超过完整 FLQ 的基础上预测了不健康食物的消费，分别证明了效标关联和增量有效性。最终的 FLQ-SF 包括 21 个项目，Cronbach's alpha 为.75。FLQ 和 FLQ-SF 的相应分量表之间的相关性范围为 r=.64-.84，从而确立了简短形式的可靠性。总体而言，FLQ-SF 简短、心理测量可靠且易于管理。它应该被视为一个重要的工具，用于研究旨在改善食物选择的公共政策和计划。
