Usefulness, Reliability, Quality, and Content of Portuguese Language YouTube Videos on COVID-19


  • Rafael Domingos Almeida Durand Gomes
  • Thiago Sousa Rodrigues
  • Ítalo Morais Alves de Moura
  • João Victor de Araújo Pereira de Albuquerque
  • Wanúbia Barbosa Nunes
  • Saul Martins Paiva
  • Ana Flávia Granville-Garcia
  • Ramon Targino Firmino


SARS-CoV-2, Pandemics, Virus Disease, Internet-Based Intervention


Objective: To investigate the usefulness, reliability, quality, and content of Portuguese-language YouTube videos on COVID-19. Material and Methods: Three keywords selected on Google Trends were searched on YouTube, and the 60 first videos listed with each term were analyzed. Two calibrated researchers evaluated the reliability (DISCERN Modified Scale), the quality (Global Quality Score - GQS), and the usefulness of videos for the users (COVID-19 Specific Score - CSS). The number of views, likes, and engagement were also analyzed. The data were evaluated by the Mann-Whitney test and Spearman correlation (α=5%). Results: 59 videos were included. The average scores of quality, reliability, and usefulness were 3.0 (±1.1), 3.2 (± 0.8), and 1.5 (± 0.9), respectively. Two-thirds of the videos (64.4%) had low/moderate quality, and the majority (76.2%) were about signs and symptoms. The numbers of views (p=0.005), likes (p=0.006), and engagement (p=0.014) were significantly higher in moderate/good quality videos. The number of comments (p=0.007), duration of videos (p=0.004), and the DISCERN score (p<0.001) were significantly higher in videos made by health professionals. The general quality of the videos was positively correlated to the CSS scores, number of views, likes, and engagement (p<0.05). Conclusion: Most videos had moderate quality and reliability and low usefulness for the users.


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How to Cite

Gomes, R. D. A. D., Rodrigues, T. S., de Moura, Ítalo M. A., de Albuquerque, J. V. de A. P., Nunes, W. B., Paiva, S. M., Granville-Garcia, A. F., & Firmino, R. T. (2023). Usefulness, Reliability, Quality, and Content of Portuguese Language YouTube Videos on COVID-19. Pesquisa Brasileira Em Odontopediatria E Clínica Integrada, 24, e220178. Retrieved from



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