Department of Health Education & Health Promotion, Faculty of Medical Sciences, Tarbiat Modares University (TMU), Tehran, Iran.
Department of Health Education & Health Promotion, Faculty of Medical Sciences, Tarbiat Modares University (TMU), P.O. Box: 14115-331, Tehran, Iran.
BMC Public Health. 2022 Oct 1;22(1):1839. doi: 10.1186/s12889-022-14221-6.
Media play an important role in shaping and changing the attitudes, thoughts, and behaviors of their audiences regarding health issues. Therefore, there is a need to explore and identify media health literacy concepts and domains.
This is a cross-sectional study to design and psychometry an instrument to assess Media Health Literacy (MeHLit) from June to Septemper 2021. Relevant literature was reviewed to identify an item pool, and an expert panel was convened to choose items that might be included in the scale. The validity of the questionnaire was assessed through face validity (qualitative and quantitative),content validity (qualitative and quantitative) and construct validity (exploratory and confirmatory factor analysis) in 213 adults. Internal consistency of the scale was assessed by Cronbach's alpha.
The content validity and reliability were demonstrated by CVR = 0.87 and CVI = 0.93, Cronbach's α = 0.91. Exploratory factor analysis showed 5 factors including "Goal appraisal skill"; "Content appraisal skill" "Implicit message appraisal skill"; "Visual Comprehension skill"; "Audience appraisal skill"; which explained 60.25 of the variance.
MeHLit is a valid and reliable questionnaire, with 21-item and 5 domains to assess media health literacy. To replicate the results obtained here, this measurement should be translated and maintained in other settings.
媒体在塑造和改变观众对健康问题的态度、思想和行为方面发挥着重要作用。因此，有必要探索和确定媒体健康素养的概念和领域。
本研究于 2021 年 6 月至 9 月进行了一项横断面研究，旨在设计和心理计量学评估媒体健康素养（MeHLit）的工具。回顾相关文献以确定项目池，并召集专家小组选择可能包含在量表中的项目。通过 213 名成年人的表面有效性（定性和定量）、内容有效性（定性和定量）和结构有效性（探索性和验证性因子分析）评估问卷的有效性。通过 Cronbach's alpha 评估量表的内部一致性。
内容效度和可靠性通过 CVR=0.87 和 CVI=0.93，Cronbach's α=0.91 得到证明。探索性因子分析显示 5 个因子，包括“目标评估技能”、“内容评估技能”、“隐含信息评估技能”、“视觉理解技能”、“受众评估技能”，解释了 60.25%的方差。
MeHLit 是一种有效的、可靠的问卷，有 21 个项目和 5 个领域来评估媒体健康素养。为了复制这里获得的结果，应将这种测量方法翻译成其他环境并进行维护。
