HealthVid-QR index: development and psychometric assessment of a scale for evaluating the quality and reliability of health-related videos

Videos have become a prevalent source of health-related information. However, there is currently no well-established scale for evaluating the quality and reliability of such videos. This study aims to develop and psychometrically evaluate an index specifically designed for assessing these videos. A multi-phase method was used to develop the index. The study was conducted between May 2024 and October 2024. Initially, an item pool was generated. This was followed by expert evaluation, leading to the creation of a 26-item draft index. The draft index was then piloted with 10 participants for preliminary feedback. Subsequently, it was distributed to 310 healthcare professionals for further evaluation. Construct validity was assessed using both exploratory and confirmatory factor analysis. Reliability was evaluated with Cronbach’s alpha analysis, ensuring the index’s internal consistency. The mean age of the participants was 36.83 ± 7.97 years, and their mean years of professional experience was 12.38 ± 8.37. The exploratory factor analysis revealed three subdimensions (Content, Technique and Quality, and Resource), containing fourteen items, which together explain 66.68% of the total variance. The confirmatory factor analysis proved adequate model fitness. The Cronbach’s α coefficients for the Content, Technique and Quality, and Resource subscales were 0.771, 0.872, and 0.877, respectively. The coefficient for the entire scale was 0.893, indicating that the index is reliable. The developed HealthVid-QR has been shown to be a valid and reliable measurement tool for evaluating the quality of videos. The index exhibited excellent psychometric properties and can be used as a guide for assessing the videos. Not applicable.