Alizadeh-Siuki Hadi, Tehrani Hadi, Gholian-Aval Mehdi, Ebrahimipour Hossein, Jafari Alireza, Vahedian-Shahroodi Mohammad
Department of Health Education and Health Promotion, Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran.
Department of Public Health,School of Health, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran.
Risk Manag Healthc Policy. 2020 Jun 9;13:539-548. doi: 10.2147/RMHP.S247356. eCollection 2020.
Brucellosis is one of the most prevalent diseases in Torbate Heidarieh, Iran; it is a common disease between human and animals. The present study aimed to review the psychometric properties of a questionnaire on brucellosis prevention behaviors based on the PRECEDE model among rural farmers and their family members (PRECEDE-QBPB).
The study was a combination of qualitative and quantitative stages. In the qualitative stage, an 86-item questionnaire including interviews with 30 farmers, their family members and other effective people, as well as literature review, was designed. In the quantitative stage, psychometric properties of the PRECEDE-QBPB including the face, content, and constructs validities, as well as reliability measurement of the questionnaire were evaluated. Item impact, content validity ratio (CVR) and content validity index (CVI) for all items were calculated. Besides, confirmatory factor analysis (CFA) was done to evaluate the construct's validity; AMOS 20 was used for this purpose. In this stage, a cross-sectional study was conducted on 500 rural farmers and their family members. To estimate the internal consistency of this questionnaire, Cronbach's alpha was used for each variable. Further, descriptive statistics and Kaiser-Meyer-Olkin and Bartlett's test of sphericity were used to describe the characteristics of the participants and collect samples, respectively.
Based on the results of face validity and content validity (CVR, CVI and CFA 9), 19 and 22 items were removed, respectively, leaving the final questionnaire with 36 items and eight subscales including knowledge, attitude, self-efficacy, social support, enabling factors, environmental factors, behavioral factors, and reinforcing factors. The Cronbach's coefficient alpha was calculated for the total questionnaire (α= 0.92, 0.69-0.87 for subscales). The evaluation of model fit indices showed that all indices confirmed the suitability of the final model fit; therefore, the questionnaire has suitable construct validity.
A questionnaire, as a valid tool, was designed in the present study. Healthcare providers, policymakers, planners, researchers may use this tool to find a comprehensive understanding of enabling, reinforcing, environmental and behavioral factors that affect brucellosis before implementing health education and health promotion programs.
布鲁氏菌病是伊朗托尔巴特海达里耶最普遍的疾病之一；它是人和动物之间的常见疾病。本研究旨在评估基于PRECEDE模型的布鲁氏菌病预防行为问卷（PRECEDE-QBPB）在农村农民及其家庭成员中的心理测量特性。
本研究结合了定性和定量阶段。在定性阶段，设计了一份包含86个条目的问卷，包括对30名农民、他们的家庭成员和其他有影响力的人进行访谈以及文献综述。在定量阶段，评估了PRECEDE-QBPB的心理测量特性，包括表面效度、内容效度和结构效度，以及问卷的信度测量。计算了所有条目的项目影响、内容效度比（CVR）和内容效度指数（CVI）。此外，进行了验证性因子分析（CFA）以评估结构效度；为此使用了AMOS 20。在这个阶段，对500名农村农民及其家庭成员进行了横断面研究。为了估计该问卷的内部一致性，对每个变量使用了Cronbach's alpha。此外，分别使用描述性统计以及Kaiser-Meyer-Olkin和Bartlett球形检验来描述参与者的特征和收集样本。
基于表面效度和内容效度（CVR、CVI和CFA 9）的结果，分别删除了19个和22个条目，最终问卷留下36个条目和八个子量表，包括知识、态度、自我效能、社会支持、促成因素、环境因素、行为因素和强化因素。计算了整个问卷的Cronbach's系数alpha（α= 0.92，子量表为0.69 - 0.87）。模型拟合指数的评估表明，所有指数都证实了最终模型拟合的适宜性；因此，该问卷具有合适的结构效度。
本研究设计了一份有效的问卷。医疗保健提供者、政策制定者、规划者、研究人员可以使用这个工具，在实施健康教育和健康促进计划之前，全面了解影响布鲁氏菌病的促成、强化、环境和行为因素。
