Przegl Epidemiol. 2022;76(1):97-103. doi: 10.32394/pe.76.10.
Adopting preventive behaviors and following the guidelines for controlling the COVID-19 epidemic depend on people's self-efficacy in carrying out these behaviors and instructions. The aim of this study was to investigate the psychometric properties of the Persian version of the COVID-19 Self-Efficacy Scale (COVID-19 SES, Hernández-Padilla et al., 2020).
This cross-sectional study was performed in a group of 400 people who were residents of the city of Asadabad in western Iran from December 2020 to January 2021. The participants were selected using a convenience sampling method. Face and content validity was assessed qualitatively based on feedback from the participants and experts, and the necessary changes were applied to the final version of the questionnaire. For construct validity, exploratory factor analysis (n=200) and confirmatory factor analysis (n=200) were performed. Internal consistency was expressed as Cronbach's alpha coefficient. Relative stability was assessed using the intraclass correlation coefficient (ICC), and absolute stability was calculated through examination of standard error of measurement (SEM).
In exploratory factor analysis, three factors of prevention, symptom recognition, and homemanagement of COVID-19 were extracted that together explained 71.35% of the total variance. The internal consistency of the whole instrument was 0.955 and its three dimensions were 0.894, 0.916 and 0.955, respectively. In addition, an ICC of 0.986 (95% CI: 0.975-0.993, p=0.001) was found. In the confirmatory factor analysis, comparative and parsimonious fit indices were excellent, and absolute fit indices were moderate.
The Persian version of the COVID-19 SES has good validity and reliability and can be used to measure self-efficacy in prevention, symptoms recognition, and home-management of COVID-19.
采取预防措施并遵循控制 COVID-19 疫情的指南取决于人们执行这些行为和指示的自我效能感。本研究的目的是调查赫南德兹-帕迪拉等人（2020 年）开发的 COVID-19 自我效能感量表（COVID-19 SES）的波斯语版本的心理测量特性。
这是一项横断面研究，于 2020 年 12 月至 2021 年 1 月在伊朗西部城市阿萨达巴德的 400 名居民中进行。参与者采用便利抽样法选取。根据参与者和专家的反馈，对面部和内容效度进行了定性评估，并对问卷的最终版本进行了必要的修改。为了进行构念效度，进行了探索性因子分析（n=200）和验证性因子分析（n=200）。内部一致性用克朗巴赫 α 系数表示。相对稳定性通过计算组内相关系数（ICC）评估，绝对稳定性通过测量标准误差（SEM）的检验计算。
在探索性因子分析中，提取了预防、症状识别和 COVID-19 家庭管理三个因子，它们共同解释了总方差的 71.35%。整个工具的内部一致性为 0.955，其三个维度分别为 0.894、0.916 和 0.955。此外，还发现 ICC 为 0.986（95%CI：0.975-0.993，p=0.001）。在验证性因子分析中，比较和简约拟合指数良好，绝对拟合指数适中。
COVID-19 SES 的波斯语版本具有良好的效度和信度，可用于测量预防、症状识别和 COVID-19 家庭管理的自我效能感。
