Abstract This study aimed to develop and rigorously evaluate the Test of Oral Health Literacy in Adults (TOHLA) for the Iranian population, addressing the limitations of existing oral health literacy (OHL) measurement instruments and contributing to the literature on OHL assessment. The development of the TOHLA involved a qualitative approach, which included a comprehensive literature review and semi-structured interviews with a panel of 15 experts from diverse fields and 22 Iranian adults aged 18 to 64 years. The instrument was designed with 48 items categorized into four domains: cognitive skill, communication skill, media skill, and functional skill. Content validity was established through expert input and content validation indices. Construct validity was supported by factor analysis, and concurrent validity was assessed by comparing TOHLA scores with demographic variables. Internal consistency and test-retest reliability analyses were performed to assess the instrument’s reliability. The psychometric evaluation of the TOHLA demonstrated strong content validity, construct validity, concurrent validity, internal consistency, and test-retest reliability. The instrument exhibited a high level of internal consistency, with a Cronbach’s alpha coefficient of 0.81 for the entire scale. Test-retest reliability was satisfactory, with an intraclass correlation coefficient (ICC) of 0.83. Concurrent validity analysis showed statistically significant associations between OHL scores and demographic variables, supporting the instrument’s overall performance. The TOHLA overcomes the weaknesses observed in existing instruments and offers a comprehensive tool with strong psychometric properties to assess the OHL of the Iranian adult population. Researchers, policymakers, and healthcare providers can utilize the TOHLA to address oral health challenges and enhance overall oral health outcomes among Iranian adults. (TOHLA population (OHL assessment approach semistructured semi structured 1 2 6 years 4 domains skill indices variables testretest test retest s Cronbachs Cronbach 081 0 81 0.8 scale Testretest satisfactory ICC (ICC 083 83 0.83 performance Researchers policymakers 08 8 0.

Risk communication (RC) is one of the necessary functions in disaster management. Establishing communication processes such as planning, transparency of policies and guidelines, RC expert training, providing communication infrastructure and evaluation in the shortest period reduces confusion and management inconsistency. One of the existing challenges is not knowing the exact dimensions of risk communication and its components in disasters. The aim was to identify the components of disaster risk communication in the health system. This research was conducted by systematic review and searching of the databases of PubMed, Scopus, Web of Science, ProQuest, Google Scholar and ScienceOpen 2000-2021 to identify the components of disaster risk communication in the health system. Thematic content analysis was used for data analysis. A Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 chart was used for systematic search, and a modified Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) was used for quality determination. Out of 12 342 articles extracted, 25 studies were included for analysis. The components of disaster risk communication were analysed in 6 categories and 19 subcategories. These categories include communication (communication processes, communication features and infrastructure), information (content production, content characteristics and publishing), risk communication management (risk perception assessment, planning, coordination and logistics), monitoring and control (monitoring and evaluation, accreditation, documentation), education and training (public and organisational) and ethics and values (culture and social beliefs, ethics and trust). According to this research, the establishment of communication infrastructure and advanced equipment such as various structured formats for communication and artificial intelligence; online and offline communication support systems; and timely and accurate notice can help achieve goals such as coordination and organisation in the health system and increase social participation. CONTRIBUTION: This study has clarified and explained all the main components and measures of risk communication that can be used for planning scientifically.