Validation of Thai version of the Health Literacy in Dentistry scale: Validation among Thai adults with physical disabilities

AIM: To validate the Thai version of the Health Literacy in Dentistry scale (HeLD-Th) among Thai adults with physical disabilities. METHODS: The original Health Literacy in Dentistry (HeLD) was translated into Thai (HeLD-Th). The final version of the HeLD-Th was evaluated through a cross-sectional study of 160 participants in Thailand. Interview questionnaires and oral examination were performed. The reliability and validity of the HeLD-Th were determined. RESULTS: The internal consistency was acceptable, with an overall Cronbach's alpha of 0.76. The face and content validity were confirmed. Sufficient construct validity was revealed by exploratory factor analysis. The convergent validity (P ≤ .013) and discriminant validity (P = .017) were estimated. The concurrent validity and predictive validity were confirmed by significantly higher HeLD-Th scores (P < .001). Multiple linear regression analyses indicated that approximately 60% of the variation in the HeLD-Th scores was explained by the final model. CONCLUSION: The HeLD-Th has sufficient psychometric properties to assess the oral health literacy of Thai adults with mild to moderate disabilities. There are some limitations of the study due to the small sample size, and the results are specific to Thai adults with disabilities. Future studies using the HeLD-Th scale are recommended.