Pan Lu, Xie Caixia, Liu Mengjiao
Clinical Nursing Teaching and Research Section, The Second Xiangya Hospital, Central South University, Changsha, China.
Department of Cardiovascular Medicine, The Second Xiangya Hospital, Central South University, Changsha, China.
Front Psychol. 2023 Oct 11;14:1168951. doi: 10.3389/fpsyg.2023.1168951. eCollection 2023.
A proper evaluation on the intention of using nutrition label in patients with coronary heart disease (CHD) is crucial to design and formulate of behavior-based interventions. A valid and reliable instrument based on theoretical basis is needed to measure individual intention toward nutrition label use and identify underlying socio-cognitive factors.
To develop and test validity and reliability of the theoretically based nutrition label use (NLU) scale and to promote the use of nutrition labels in CHD patients.
A questionnaire was developed based on the theory of planned behavior (TPB), empirical literatures, expert review and pilot tested. A total of 460 CHD patients in a hospital in Changsha were investigated using this questionnaire from April 2021 to August 2021. The items and dimensions in the scale were explored and confirmed using item-analysis, content validity, exploratory factor analytical (EFA), confirmatory factor analytical (CFA), internal consistency and split-half reliability tests.
A total of 33 items with 4 structural factors were identified, including 10 items of attitude, 6 items of subjective norm, 12 items of perceived behavior control, and 5 items of intention. The total variance explained by the EFA model was 68.563%. The model was further tested with CFA. The measurement model fitted the data well (Ratio of chi-square minimum and degree of freedom (CMIN/DF) =1.743, goodness of fit index (GFI) =0.814, incremental fit index (IFI) =0.946, Tuker-Lewis index (TLI) =0.940, the comparative fit index (CFI) =0.945, the root mean square error of approximation (RMSEA) =0.057). The content validation index (CVI) of the scale was 0.82, and the CVI of the items ranged from 0.8 to 1.00. The reliability of the scale was 0.976 ( < 0 0.001) using Cronbach's alpha and 0.937 ( < 0.001) using the split-half coefficient.
The newly developed Nutrition Label Use Scale can serve as a valid and reliable tool to evaluate the nutrition label use of CHD patients.
对冠心病（CHD）患者使用营养标签意图的恰当评估对于基于行为的干预措施的设计和制定至关重要。需要一个基于理论基础的有效且可靠的工具来衡量个体对营养标签使用的意图，并识别潜在的社会认知因素。
开发并测试基于理论的营养标签使用（NLU）量表的有效性和可靠性，并促进冠心病患者对营养标签的使用。
基于计划行为理论（TPB）、实证文献、专家评审并经预试验开发了一份问卷。2021年4月至2021年8月，使用该问卷对长沙一家医院的460名冠心病患者进行了调查。通过项目分析、内容效度、探索性因素分析（EFA）、验证性因素分析（CFA）、内部一致性和分半信度测试对量表中的项目和维度进行了探索和确认。
共识别出33个项目，分为4个结构因素，包括10个态度项目、6个主观规范项目、12个感知行为控制项目和5个意图项目。EFA模型解释的总方差为68.563%。使用CFA对该模型进行了进一步测试。测量模型与数据拟合良好（卡方最小值与自由度之比（CMIN/DF）=1.743，拟合优度指数（GFI）=0.814，增值拟合指数（IFI）=0.946，图克-刘易斯指数（TLI）=0.940，比较拟合指数（CFI）=0.945，近似误差均方根（RMSEA）=0.057）。该量表的内容效度指数（CVI）为0.82，各项目的CVI范围为0.8至1.00。使用克朗巴赫α系数时量表的信度为0.976（P<0.001），使用分半系数时为0.937（P<0.001）。
新开发的营养标签使用量表可作为评估冠心病患者营养标签使用情况的有效且可靠的工具。
Zotero 插件